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Daikin REYQ8-48PY1B, Service Manual

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Daikin REYQ8-48PY1B Service Manual Download Page 396

Troubleshooting (OP: Unified ON/OFF Controller)

SiBE37-701_B

385

Troubleshooting

[CHECK 5] Check for causes of rise in high pressure

Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points.

Local 

pressure 

rise

[In cooling]
If the outdoor unit electronic 
expansion valve is throttled: 
(See *1.)

Faulty high 

pressure 

control

Rise in high 
pressure

[In heating]
If the indoor unit electronic 
expansion valve is excessively 
throttled:
(See *2.)

High suction 
air 
temperature 
of the 
condenser

[In cooling]

[In heating]

Degradation in 
condensing 
capacity

Excessive refrigerant charging

Improper model selection [In heating]

High pipe 

resistance

Faulty outdoor 

unit electronic 

expansion valve

A temperature difference in excess of 10°C between the 

inlet and the outlet is deemed to be abnormal.

Faulty 
control

Faulty indoor 
unit electronic 
expansion valve

Faulty 
control

High suction air 
temperature of 
indoor unit

High suction air 
temperature of 
indoor unit

Faulty suction air thermistor of indoor unit

High suction air temperature of outdoor unit

Faulty outdoor air temperature thermistor of outdoor unit

Dirty condenser

Mixing of non-condensable gas

Decreased 
fan airflow 
rate

Decreased 
fan output

High air 
passage 
resistance

Faulty fan 
motor

Faulty control 
PCB (Including 
capacity 
setting)

Dirty filter

Obstacle

Stop valve closed

Bent or crashed pipe

Clogging of foreign 

particles

Faulty valve coil

Faulty valve body

Faulty high pressure sensor

Faulty control PCB

Faulty valve coil

Faulty valve body

Faulty high pressure sensor

Faulty indoor unit 

liquid pipe thermistor

Faulty control PCB

Short circuit

High outdoor air temperature

Short circuit

High outdoor air temperature

←

Check to be sure the stop valve is open.

←

Conduct visual checks for pipe conditions.

←

Is there any temperature difference caused 
before and after the filter or branch pipe.

←

Are the coil resistance and insulation normal?

←

Are the electrical characteristics normal?

←

Is the pressure value checked with the Service Checker 
corresponding to the measurement of the pressure sensor?

←

Are the coil resistance and insulation 
normal?

←

Are the electrical characteristics normal?

←

Is the connector properly connected?
Are the thermistor resistance characteristics normal?

←

Is the pressure value checked with the 
Service Checker corresponding to the 
measurement of the pressure sensor?

←

Is the suction air temperature not more 
than 43°C?

←

Is the outdoor temperature not more than 43°C?

←

Is the suction air temperature not more than 27°C?

←

Is the indoor temperature not more than 27°C?

←

Is the connector properly connected?
Are the thermistor resistance characteristics normal?

←

Is the outdoor temperature not more than 16°CWB?

←

Is the connector properly connected?
Are the thermistor resistance characteristics normal?

←

Is the heat exchanger clogged? (In cooling)

←

Is air or else mixed in the refrigerant system?

←

Can the fan motor be rotated with hands?
Are the motor coil resistance and 
insulation normal?

←

If a spare PCB is mounted, is the capacity 
setting properly made?

←

Is the air filter clogged?

←

Is there any obstacle in the air passage?

←

Refer to P300.

←

Is the indoor unit too small compared to 
the large-sized outdoor unit?

*1: In cooling, it is normal if the outdoor unit electronic expansion valve (EVM) is fully open.
*2: In heating, the indoor unit electronic expansion valve is used for “subcooled degree control”.

SDK04009

Summary of Contents for REYQ8-48PY1B

Page 1: ...Service Manual REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701_B ...

Page 2: ... 21 1 3 BS Units 57 Part 3 Refrigerant Circuit 58 1 Refrigerant Circuit 59 1 1 REYQ8P 10P 12P 59 1 2 REYQ14P 16P 61 1 3 REMQ8P Multi 8HP 63 1 4 REMQ10P 12P Multi 10 12HP 65 1 5 REMQ14P 16P Multi 14 16HP 67 1 6 BS Unit Functional Parts 69 1 7 Indoor Units 70 2 Functional Parts Layout 71 2 1 REYQ8P 10P 12P 71 2 2 REYQ14P 16P 72 2 3 REMQ8P 73 2 4 REMQ10P 12P 74 2 5 REMQ14P 16P 75 3 Refrigerant Flow f...

Page 3: ...n Prohibition 140 6 Outline of Control Indoor Unit 141 6 1 Operation Flow Chart 141 6 2 Thermostat Control 143 6 3 Drain Pump Control 147 6 4 Control of Electronic Expansion Valve 149 6 5 Freeze Prevention 150 6 6 Heater Control Optional PCB KRP1B is required 151 6 7 List of Swing Flap Operations 152 6 8 Hot Start Control In Heating Operation Only 153 6 9 Louver Control for Preventing Ceiling Dirt...

Page 4: ...Malfunction of Thermistor R1T for Suction Air 283 3 15 CJ Indoor Unit Malfunction of Room Temperature Thermistor in Remote Controller 284 3 16 E1 Outdoor Unit PCB Defect 285 3 17 E3 Outdoor Unit Actuation of High Pressure Switch 286 3 18 E4 Outdoor Unit Actuation of Low Pressure Sensor 288 3 19 E5 Outdoor Unit Inverter Compressor Motor Lock 290 3 20 E6 Outdoor Unit STD Compressor Motor Overcurrent...

Page 5: ...9 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 342 3 50 U3 Outdoor Unit Check Operation is not Executed 345 3 51 U4 Malfunction of Transmission between Indoor Units and Outdoor Units 346 3 52 U5 Indoor Unit Malfunction of Transmission between Remote Controller and Indoor Unit 349 3 53 U7 Outdoor Unit Transmission Failure Across Outdoor Units 350 3 54 U8 Indoor Unit Malfunctio...

Page 6: ... Unit 431 3 2 Indoor Side 435 4 Option List 440 4 1 Option List of Controllers 440 4 2 Option Lists Outdoor Unit 442 5 Piping Installation Point 443 5 1 Piping Installation Point 443 5 2 The Example of a Wrong Pattern 444 6 Example of connection 446 7 Thermistor Resistance Temperature Characteristics 450 8 Pressure Sensor 452 9 Method of Checking the Inverter s Power Transistors and Diode Modules ...

Page 7: ...e plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharg...

Page 8: ... the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient stren...

Page 9: ...rvice valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor im...

Page 10: ...ical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MΩ or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor Icon Type of Information Description Note Note A note provides information ...

Page 11: ...ries Heat Recovery System Daikin offers a wide range of models to respond to building and office air conditioning needs We are confident that customers will be able to find the models that best suit their needs This service manual contains information regarding the servicing of VRVIII series R 410A Heat Recovery System December 2010 After Sales Service Division ...

Page 12: ...01_B 1 General Information Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 4 3 Combination of Outdoor Units 5 4 Model Selection 6 ...

Page 13: ...KQ 25MA 32MA 40MA 63MA VE Slim Concealed Ceiling Unit FXDQ PBVE 20PB 25PB 32PB FXDQ NBVE 40NB 50NB 63NB Concealed Ceiling Unit Small FXDQ 20M9 25M9 V3B Concealed Ceiling Unit FXSQ 20P7 25P7 32P7 40P7 50P7 63P7 80P7 100P7 125P7 VEB Concealed Ceiling Unit FXMQ 20P 25P 32P 40P 50P 63P 80P 100P 125P 140P VE Concealed Ceiling Unit Large FXMQ 200MA 250MA Ceiling Suspended Unit FXHQ 32MA 63MA 100MA Wall ...

Page 14: ...FXCQ20M FXCQ25M FXCQ32M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M Ceiling Suspended Unit FXHQ32MA FXHQ63MA FXHQ100MA Ceiling Mounted Corner Cassette FXKQ25MA FXKQ32MA FXKQ40MA FXKQ63MA Wall Mounted Unit FXAQ20P FXAQ25P FXAQ32P FXAQ40P FXAQ50P FXAQ63P Slim Concealed Ceiling Unit FXDQ20PB FXDQ40NB FXDQ25PB FXDQ50NB FXDQ32PB FXDQ63NB with Drain Pump VE Floor Standing Unit FXLQ20MA FXLQ25MA FXLQ32MA FX...

Page 15: ...P 10P 12P 14P 16P REYQ18P 20P 22P 24P 8 10 12 14 16 HP 22 4 40 0 45 0 kW 18 20 22 24 HP 50 4 67 0 kW REYQ26P 28P REYQ30P 32P REYQ34P 36P 38P 40P 26 28 HP 73 0 78 5 kW 30 32 HP 85 0 90 0 kW 34 36 38 40 HP 95 4 112 kW REYQ42P 44P REYQ46P 48P 42 44 HP 118 124 kW 46 48 HP 130 135 kW ...

Page 16: ...Kit is required System Capacity Number of units Single Unit Outdoor Unit Multi Connection Piping Kit Option 8 10 12 14 16 8HP 1 10HP 1 12HP 1 14HP 1 16HP 1 System Capacity Number of units Multi Unit Module Outdoor Unit Multi Connection Piping Kit Option 8 10 12 14 16 18HP 2 Heat Recovery BHFP26P90 20HP 2 22HP 2 24HP 2 26HP 2 28HP 2 30HP 2 32HP 2 34HP 3 Heat Recovery BHFP26P136 36HP 3 38HP 3 40HP 3...

Page 17: ...Q32P REYQ34P Outdoor unit 1 REMQ10P REMQ12P REMQ10P REMQ12P REMQ14P REMQ16P REMQ8P Outdoor unit 2 REMQ12P REMQ12P REMQ16P REMQ16P REMQ16P REMQ16P REMQ10P Outdoor unit 3 REMQ16P Total number of connectable indoor units 35 39 42 45 48 52 55 Total capacity of connectable indoor units kW 27 5 71 5 30 0 78 0 32 5 84 5 35 0 91 0 37 5 97 5 40 0 104 0 42 5 110 5 HP 36HP 38HP 40HP 42HP 44HP 46HP 48HP Syste...

Page 18: ...25M9 32M9 40M9 50M9 V1B 2 Way Blow Ceiling Mounted Cassette FXCQ 20M8 25M8 32M8 40M8 50M8 63M8 80M8 125M8 V3B Ceiling Mounted Corner Cassette FXKQ 25MA 32MA 40MA 63MA VE Slim Concealed Ceiling Unit FXDQ PBVE 20PB 25PB 32PB FXDQ NBVE 40NB 50NB 63NB Concealed Ceiling Unit Small FXDQ 20M9 25M9 V3B Concealed Ceiling Unit FXSQ 20P7 25P7 32P7 40P7 50P7 63P7 80P7 100P7 125P7 VEB Concealed Ceiling Unit FX...

Page 19: ... Equalizer oil pipe for multi outdoor unit system z NONE z YES Procedure for calculating refrigerant refilling quantity z Refilling quantity due to piping length Adjustment quantity according to models of outdoor units z Refilling quantity due to piping length Adjustment quantity according to models of outdoor units Optional accessories Branch pipe for outdoor unit connection z Y branch Type BHFP2...

Page 20: ...SiBE37 701_B 9 Specifications Part 2 Specifications 1 Specifications 10 1 1 Outdoor Units 10 1 2 Indoor Units 21 1 3 BS Units 57 ...

Page 21: ...t Soft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 35 2 Airflow Rate I s 3 166 3 166 m min 190 190 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe φ9 5 C1220T Brazing Connection φ9 5 C1220T Brazing Connection Suction Gas Pipe φ19 1 C1220T Brazing Connection φ22 2 C1220T Brazing Connection High and Low Pressure Gas Pipe φ15 9 C1220T Brazing Connection φ19 1 C122...

Page 22: ...rting Method Soft Start Soft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 75 2 Airflow Rate I s 3 500 3 916 m min 210 235 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe φ12 7 C1220T Brazing Connection φ12 7 C1220T Brazing Connection Suction Gas Pipe φ28 6 C1220T Brazing Connection φ28 6 C1220T Brazing Connection High and Low Pressure Gas Pipe φ19 1 C1220T Brazi...

Page 23: ... Displacement m h 16 90 16 90 Number of Revolutions r p m 7980 7980 Motor Output Number of Units kW 4 4 4 4 Starting Method Soft Start Fan Type Propellor Fan Motor Output kW 0 75 2 Airflow Rate I s 4 000 m min 240 Drive Direct Drive Connecting Pipes Liquid Pipe φ12 7 C1220T Brazing Connection Suction Gas Pipe φ28 6 C1220T Brazing Connection High and Low Pressure Gas Pipe φ22 2 C1220T Brazing Conne...

Page 24: ...1 3 5 4 5 1 4 7 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 75 1 0 75 1 Airflow Rate I s 3 000 3 083 3 000 3 333 m min 180 185 180 200 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ15 9 C1220T Brazing connection φ15 9 C1220T Brazing connection Suction Gas Pipe φ28 6 C1220T Brazing connection φ28 6 C1220T Brazing conne...

Page 25: ...5 1 3 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 75 2 Airflow Rate I s 3 083 3 333 3 333 3 333 m min 185 200 200 200 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ15 9 C1220T Brazing connection φ15 9 C1220T Brazing connection Suction Gas Pipe φ28 6 C1220T Brazing connection φ34 9 C1220T Brazing connection High ...

Page 26: ... 3 2 4 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 1 3 5 4 5 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 35 2 0 75 1 0 35 2 Airflow Rate I s 3 083 3 833 3 333 3 833 m min 185 230 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ34 9 C1220T Brazing connec...

Page 27: ...1 1 9 4 5 4 5 1 3 2 4 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 35 2 0 35 2 0 35 2 2 Airflow Rate I s 3 833 3 833 3 833 3 833 m min 230 230 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ34 9 C1220T Brazing connection φ34 9 C1220T Brazin...

Page 28: ...kW 3 2 4 5 4 5 1 2 2 4 5 1 4 7 1 3 2 4 5 4 5 1 3 5 4 5 1 4 7 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 35 2 0 75 1 0 75 1 0 35 2 Airflow Rate I s 3 000 3 083 3 833 3 000 3 333 3 833 m min 180 185 230 180 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connect...

Page 29: ... 3 2 4 5 4 5 1 3 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 1 3 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 35 2 0 75 2 0 35 2 Airflow Rate I s 3 083 3 333 3 833 3 333 3 333 3 833 m min 185 200 230 200 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction...

Page 30: ...Units kW 3 2 4 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 2 3 5 4 5 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 35 2 2 0 75 1 0 35 2 2 Airflow Rate I s 3 083 3 833 3 833 3 333 3 833 3 833 m min 185 230 230 200 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas ...

Page 31: ... 4 5 2 1 9 4 5 4 5 1 3 2 4 5 4 5 3 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 35 2 0 35 2 2 0 35 2 3 Airflow Rate I s 3 833 3 833 3 833 3 833 3 833 3 833 m min 230 230 230 230 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ41 3 C1220T Brazing con...

Page 32: ... 267 0 267 0 267 0 267 0 357 Nr of Stages 6 6 6 6 8 Empty Tube Plate Hole 4 4 Fin Fin type Cross fin coil Multi louver fins and Hi XSS tubes Fan Type Turbo fan Quantity 1 Airflow Rate Cooling High m min 12 5 12 5 12 5 13 5 15 5 Low m min 9 0 9 0 9 0 9 0 10 0 Heating High m min 12 5 12 5 12 5 13 5 15 0 Low m min 9 0 9 0 9 0 9 0 9 5 Fan Motor Model QTS48D11M Steps 2 Output high W 56 Refrigerant Name...

Page 33: ...ting the power which a sound source generates Nominal cooling capacities are based on indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB equivalent refrigerant piping 5m level difference 0m Nominal heating capacities are based on indoor temperature 20 CDB outdoor temperature 7 CDB 6 CWB equivalent refrigerant piping 5m level difference 0m Capacities are net including a deduction for cooli...

Page 34: ...r of Stages 8 10 10 12 Fin Fin type Cross fin coil Multi louver fins and Hi XSS tubes Fan Type Turbo fan Quantity 1 Airflow Rate Cooling High m min 16 5 23 5 26 5 33 0 Low m min 11 0 14 5 17 0 20 0 Heating High m min 17 5 23 5 28 0 33 0 Low m min 12 0 14 5 17 5 20 0 Fan Motor Model QTS48D11M QTS48C15M QTS48C15M QTS48C15M Steps 2 Output high W 56 120 120 120 Refrigerant Name R 410A Sound level Cool...

Page 35: ...AL SPECIFICATIONS FXFQ20P8VEB FXFQ25P8VEB FXFQ32P8VEB FXFQ40P8VEB FXFQ50P8VEB Power Supply Name VE Frequency Hz 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 4 0 4 0 4 0 5 0 6 Maximum fuse amps MFA A 16 Full load amps FLA A 0 3 0 3 0 3 0 4 0 5 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit term...

Page 36: ...id OD Type Flare connection Diameter mm 6 35 Gas Type Flare connection Diameter mm 12 7 Drain Diameter mm 26 Heat Insulation Foamed polystyrene foamed polyethylene Decoration Panel Model BYFQ60B7W1 Colour White Ral 9010 Dimensions Height mm 55 Width mm 700 Depth mm 700 Weight kg 2 7 Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Temperature control Micropr...

Page 37: ... A 15 Full load amps FLA A 0 6 0 6 0 6 0 6 0 7 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse rating minimum ...

Page 38: ...le 6 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 2 2 Airflow Rate Cooling High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Heating High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Fan Motor Quantity 1 1 1 1 1 Steps Phase cut control Output high W 10 15 15 20 20 Drive Direct drive Refrigerant Name R 41...

Page 39: ...s Washer for hanging bracket Quantity 8 8 8 8 8 Standard Accessories Clamps Quantity 1 1 1 1 1 Standard Accessories Installation and operation manual Quantity 1 1 1 1 1 Standard Accessories Paper pattern for installation Quantity 1 1 1 1 1 Standard Accessories Insulation for fitting Quantity 2 2 2 2 2 Standard Accessories Drain hose Quantity 1 1 1 1 1 Notes Nominal cooling capacities are based on ...

Page 40: ...type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 2 3 3 Airflow Rate Cooling High m min 16 5 26 0 33 0 Low m min 13 0 21 0 25 0 Heating High m min 16 5 26 0 33 0 Low m min 13 0 21 0 25 0 Fan Motor Quantity 1 1 1 Steps Phase cut control Output high W 30 50 85 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 5...

Page 41: ...ccessories Washer for hanging bracket Quantity 8 8 8 Standard Accessories Clamps Quantity 1 1 1 Standard Accessories Installation and operation manual Quantity 1 1 1 Standard Accessories Paper pattern for installation Quantity 1 1 1 Standard Accessories Insulation for fitting Quantity 2 2 2 Standard Accessories Drain hose Quantity 1 1 1 Notes Nominal cooling capacities are based on indoor temperat...

Page 42: ...er For more details concerning conditional connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXCQ63M8V3B FXCQ80M8V3B FXCQ125M8V3B Power Supply Name V3 Phase 1 1 1 Frequency Hz 50 50 50 Voltage V 230 230 230 Current Minimum circuit amps MCA A 0 90 1 10 1 30 Maximum fuse amps MFA A 16 00 16 00 16 00 Ful...

Page 43: ...ter mm 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 15 9 Drain Diameter mm 32 Heat Insulation Foamed Polyethylene Decoration Panel Model BYK45FJW1 BYK45FJW1 BYK45FJW1 BYK71FJW1 Colour White Dimensions Height mm 70 Width mm 1240 1240 1240 1440 Depth mm 800 Weight kg 8 5 8 5 8 5 9 5 Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Tempe...

Page 44: ...0 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA instead of a fuse use a circuit breaker For more details conce...

Page 45: ...ter Removable washable Mildew proof Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan motor thermal protector Standard Accessories Standard Accessories Operation manual Installation manual Drain hose Sealing pads Clamps Washer Insulation for fitting Clamp metal Washer fixing plate Screws for duct flanges Air...

Page 46: ...amps MFA A 15 Full load amps FLA A 0 6 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse rating minimum 15A Sele...

Page 47: ...m VP20 I D 20 O D 26 Sound absorbing insulation Foamed polyethylene Air Filter Removable washable Mildew proof Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan motor thermal protector Standard Accessories Standard Accessories Operation manual Installation manual Drain hose Sealing pads Clamps Washer Insulat...

Page 48: ...ll load amps FLA A 0 8 0 8 0 9 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse rating minimum 15A Select wire ...

Page 49: ...step motor Output high W 10 Drive Direct drive Refrigerant Name R 410A Sound level Cooling Sound power nominal dBA 50 Cooling Sound Pressure High dBA 37 Low dBA 32 Heating Sound Pressure High dBA 37 Low dBA 32 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 Gas Type Flare connection Diameter mm 12 7 Drain Diameter mm I D 21 6 O D 27 2 Air Filter Resin net with mold resistance A...

Page 50: ...Full load amps FLA A 0 1 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA Next lower standard fuse rating minimum 16A Select wire size based on the MCA Instead of a...

Page 51: ...148 0 148 Nr of Stages 16 Empty Tube Plate Hole 12 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 Cooling High m min 9 9 9 5 16 16 Low m min 6 5 6 5 7 11 11 Heating High m min 9 9 9 5 16 16 Low m min 6 5 6 5 7 11 11 Fan External static pressure High Pa 70 70 70 100 100 Standard Pa 30 Motor Quantity 1 Model Brushless DC motor Steps 9 9 ...

Page 52: ...sistance Refrigerant control Electronic expansion valve Safety devices PCB fuse PCB fuse fan driver Drain pump fuse Notes Nominal cooling capacities are based on indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB equivalent refrigerant piping 7 5m level difference 0m Nominal heating capacities are based on indoor temperature 20 CDB outdoor temperature 7 CDB 6 CWB equivalent refrigerant pi...

Page 53: ...ions Length mm 740 740 1 140 1 140 Nr of Rows 3 Fin Pitch mm 1 75 Nr of Passes 7 7 11 11 Face Area m 0 249 0 249 0 383 0 383 Nr of Stages 16 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 2 2 3 3 Cooling High m min 19 5 25 32 39 Low m min 16 20 23 28 Heating High m min 19 5 25 32 39 Low m min 16 20 23 28 Fan External static pressure High...

Page 54: ...eduction for cooling an addition for heating for indoor fan motor heat The sound pressure values are mentioned for a unit installed with rear suction 1 2 ELECTRICAL SPECIFICATIONS FXSQ20P7VEB FXSQ25P7VEB FXSQ32P7VEB FXSQ40P7VEB FXSQ50P7VEB Power Supply Name VE Frequency Hz 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 4 0 4 0 4 1 2 1 2 Maximum fuse amps MFA A 16 Voltage range Minimum V...

Page 55: ... 7 12 7 12 7 12 7 12 7 Drain Diameter mm VP25 I D 32 O D 25 Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan driver overload protector Standard Accessories Operation manual Installation manual Drain hose Sealing pads Clamps Washer Screws Insulation for fitting Clamp metal Air discharge flange Air suction fl...

Page 56: ...15 9 15 9 15 9 15 9 15 9 Drain Diameter mm VP25 I D 32 O D 25 Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan driver overload protector Standard Accessories Operation manual Installation manual Drain hose Sealing pads Clamps Washer Screws Insulation for fitting Clamp metal Air discharge flange Air suction ...

Page 57: ... FLA Next lower standard fuse rating minimum 16A Select wire size based on the MCA Instead of a fuse use a circuit breaker 1 2 ELECTRICAL SPECIFICATIONS FXMQ63PVE FXMQ80PVE FXMQ100PVE FXMQ125PVE FXMQ140PVE Power Supply Name VE Phase 1 Frequency Hz 50 Voltage V 220 240 Current Minimum circuit amps MCA A 1 8 2 3 2 9 3 4 3 4 Maximum fuse amps MFA A 16 Full load amps FLA A 1 4 1 8 2 3 2 7 2 7 Voltage ...

Page 58: ...Braze connection Diameter mm 19 1 22 2 Drain Diameter mm PS1B PS1B Heat Insulation Glass fiber Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan motor thermal protector Standard Accessories Operation manual Installation manual Connection pipes Sealing pads Clamps Screws Insulation for fitting Clamp metal Not...

Page 59: ...mps FLA A 6 5 7 2 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse rating minimum 15A Select wire size based on...

Page 60: ...nd Pressure High dBA 36 39 45 Low dBA 31 34 37 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 9 52 9 52 Gas Type Flare connection Diameter mm 12 7 15 9 15 9 Drain Diameter mm VP20 I D 20 O D 26 Heat Insulation Glass wool Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating...

Page 61: ... load amps FLA A 0 6 0 6 0 7 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse rating minimum 15A Select wire si...

Page 62: ... W 40 40 40 43 43 43 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 36 0 37 0 38 0 40 0 43 0 47 0 Low dBA 31 0 31 0 31 0 36 0 38 0 41 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 6 35 6 35 6 35 6 35 9 52 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm VP13 I D 13 O D 18 Heat Insulation Foamed polystyrene foa...

Page 63: ... amps MFA A 15 Full load amps FLA A 0 2 0 3 0 3 0 3 0 3 0 5 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower standard fuse ra...

Page 64: ...4B20 2D14B13 2D14B13 2D14B20 2D14B20 Output high W 15 15 25 25 35 35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm O D 21 Heat Ins...

Page 65: ... 0 50 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA instead of a fuse use a circuit...

Page 66: ...13 2D14B13 2D14B20 2D14B20 Output high W 15 15 25 25 35 35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 6 35 6 35 6 35 6 35 9 52 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm 21 21 21 21 21 21 H...

Page 67: ...e amps MFA A 15 15 15 15 15 15 Full load amps FLA A 0 2 0 2 0 5 0 5 0 5 0 5 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA is smaller than or equal to 4 FLA Next lower ...

Page 68: ...azing connection 1 9 5mm C1220T brazing connection Gas Pipes 15 9mm C1220T brazing connection 1 15 9mm C1220T brazing connection 2 Outdoor Unit Liquid Pipes 12 7mm C1220T brazing connection 15 9mm C1220T brazing connection Suction Gas Pipes 28 6mm C1220T brazing connection 28 6mm C1220T brazing connection 2 HP LP Gas Pipes 19 1mm C1220T brazing connection 28 6mm C1220T brazing connection 2 Weight ...

Page 69: ...14P 16P 61 1 3 REMQ8P Multi 8HP 63 1 4 REMQ10P 12P Multi 10 12HP 65 1 5 REMQ14P 16P Multi 14 16HP 67 1 6 BS Unit Functional Parts 69 1 7 Indoor Units 70 2 Functional Parts Layout 71 2 1 REYQ8P 10P 12P 71 2 2 REYQ14P 16P 72 2 3 REMQ8P 73 2 4 REMQ10P 12P 74 2 5 REMQ14P 16P 75 3 Refrigerant Flow for Each Operation Mode 76 ...

Page 70: ...s when pressure increases to stop operation and avoid high pressure increase in the fault operation 23 S2PH High pressure switch For STD 24 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 25 Pressure regulating valve Refrigerant regulator This is used when pressure increases to preven...

Page 71: ...ual Pressure Gas Pipe Stop Valve Suction Pipe Stop Valve 9 Subcooling Heat Exchanger 2 50 26 48 8 Heat Exchanger 2 46 19 4 45 11 47 6 23 34 2 29 42 S2PH STD Gauge Port 24 S1NPH 20 Subcooling Heat Exchanger 1 Heat Exchanger 1 39 26 38 7 36 35 10 37 5 17 3 31 22 Gauge Port S2NPL 33 1 28 INV 21 32 16 15 30 27 13 25 14 12 Right Left S1PH 18 40 ...

Page 72: ...ssure increases to stop operation and avoid high pressure increase in the fault operation 24 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 25 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressure i...

Page 73: ...as Pipe Stop Valve Suction Pipe Stop Valve 9 Subcooling Heat Exchanger 2 50 26 48 8 Heat Exchanger 2 46 19 4 45 11 47 6 23 33 2 28 41 S2PH INV2 Gauge Port 24 S1NPH 20 Liquid Pipe Heat Exchanger 1 39 26 38 7 36 35 10 37 5 17 3 30 22 Gauge Port S2NPL 32 1 28 INV1 21 31 16 15 29 27 13 25 14 12 Right Left S1PH 18 40 Subcooling Heat Exchanger 1 ...

Page 74: ...ease in the fault operation 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 24 Subcooling heat exchanger A...

Page 75: ...it 64 REMQ8P Stop Valve 40 Liquid Pipe 22 36 15 4 30 35 37 6 9 Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe 17 S1NPH 10 16 19 32 39 24 38 7 23 11 25 12 13 29 14 S1PH 1 INV 26 S2NPL 18 Gauge Port 31 8 Stop Valve Suction Pipe ...

Page 76: ...h pressure increase in the fault operation 20 S2PH High pressure switch For STD compressor 1 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressur...

Page 77: ...REMQ10P 12P Stop Valve 40 Liquid Pipe 22 36 15 4 30 35 37 6 9 Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe 17 S1NPH 16 19 32 39 24 38 7 23 11 25 12 13 29 14 S1PH 1 INV 26 S2NPL 18 Gauge Port 31 8 Stop Valve Suction Pipe 10 27 2 S1 S2PH 20 33 ...

Page 78: ... the fault operation 20 S2PH High pressure switch For STD compressor 1 21 S3PH High pressure switch For STD compressor 2 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on ...

Page 79: ...6P Stop Valve 40 Liquid Pipe 22 36 15 4 30 35 37 6 9 Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe 17 S1NPH 16 19 32 39 24 38 7 23 11 25 12 13 29 28 S1PH 1 INV 26 S2NPL 18 Gauge Port 31 8 Suction Pipe 10 27 2 S1 S2PH 20 33 S3PH 21 34 3 S2 5 Stop Valve ...

Page 80: ...e EVHS Y2E Opens while in heating operation or all indoor units are in cooling operation Max 480pls 4 Electronic expansion valve EVLS Y3E Opens while in cooling operation Max 480pls 5 Electronic expansion valve EVSC Y1E In simultaneous cooling and heating operation it is used to subcooling liquid refrigerants when an indoor unit downstream of this BS unit is in heating operation Max 480pls 6 Capil...

Page 81: ... degree of gas when cooling and subcooled degree when heating Max 2000 pls Suction air thermistor R1T Used for thermostat control Liquid pipe thermistor R2T Used to control superheated degree of gas when cooling and subcooled degree when heating Gas pipe thermistor R3T Used for gas superheated degree control when cooling Gas side Piping Liquid side Piping Fan Electronic Expansion Valve Filter Filt...

Page 82: ...H Y10S Y7S Y1S Y3S 4 FAN MOTOR 36 THERMISTOR HEAT EXC GAS 1 9 DRIVING FOR EXPANSIONVALVE CHARGE 6 DRIVINGFOREXPANSIONVALVE MAIN2 8 DRIVINGFOREXPANSIONVALVE SUBCOOLING2 46 THERMISTOR HEAT EXC GAS 2 47 THERMISTOR HEATEXC LIQUID2 48 THERMISTOR SUBCOOLINGHEATEXCH GAS2 42 THERMISTOR SUCTION 2 45 THERMISTOR DEICER 2 CRANKCASE HEATER 2 COMPRESSOR STD 40 THERMISTOR LIQUID 7 DRIVING FOR EXPANSION VALVE SUB...

Page 83: ...HERMISTOR HEAT EXC GAS 1 9 DRIVINGFOREXPANSIONVALVE CHARGE 6 DRIVINGFOREXPANSIONVALVE MAIN2 8 DRIVINGFOREXPANSIONVALVE SUBCOOLING2 46 THERMISTOR HEAT EXC GAS 2 47 THERMISTOR HEAT EXC LIQUID 2 48 THERMISTOR SUBCOOLINGHEATEXCH GAS2 41 THERMISTOR SUCTION 2 45 THERMISTOR DEICER 2 CRANKCASE HEATER 40 THERMISTOR LIQUID 7 DRIVING FOR EXPANSION VALVE SUBCOOLING 1 3 FAN MOTOR 5 DRIVING FOR EXPANSION VALVE ...

Page 84: ...GE SECTION M M 18 PRESSURE SENSOR LOW PRESS 40 THERMISTOR LIQUID 38 THERMISTOR SUBCOOLING HEATEXCH GAS VIEW N M N Y4S Y3E Y6S R31T S1PH Y2E R5T R9T S2NPL R8T Y5S 4 FAN MOTOR 16 FOUR WAY VALVE PIPE 15 FOUR WAY VALVE HEAT EXC 6 COIL FOREXPANSIONVALVE MAIN 36 THERMISTOR HEAT EXC GAS 37 THERMISTOR HEAT EXCH LIQUID 39 THERMISTOR SUBCOOLINGHEATEXCH LIQUID 35 THERMISTOR HEAT EXCH DEICER EARTH WIRE 12 SOL...

Page 85: ...ISTOR LIQUID 38 THERMISTOR SUBCOOLINGHEATEXCH GAS VIEW N M INSULATION TUBE 19 PRESSURE SWITCH HIGH PRESSURE PROTECTION 33 THERMISTOR M2C DISCHARGE PIPE N Y4S Y3E Y6S R31T R32T S1PH S2PH Y2E R8T Y5S S2NPL R9T R5T 4 FAN MOTOR 16 FOUR WAY VALVE PIPE 15 FOUR WAY VALVE HEAT EXC 6 COIL FOREXPANSION VALVE MAIN 36 THERMISTOR HEAT EXC GAS 37 THERMISTOR 39 THERMISTOR 35 THERMISTOR HEAT EXCH DEICER EARTH WIR...

Page 86: ...ISTOR M3CDISCHARGEPIPE INSULATION TUBE 33 THERMISTOR M2C DISCHARGE PIPE 32 THERMISTOR M1C DISCHARGE PIPE 38 THERMISTOR SUBCOOLING GAS VIEW N N M Y4S Y3E Y6S R31T R32T R33T S3PH S2PH S1PH R8T Y5S S2NPL R9T R5T 4 FAN MOTOR 5 FAN MOTOR 16 FOURWAYVALVE PIPE 15 FOURWAYVALVE HEATEXC 36 THERMISTOR HEATEXCGAS 37 THERMISTOR HEAT EXCH LIQUID 39 THERMISTOR SUBCOOLING LIQUID 35 THERMISTOR DEICER EARTH WIRE 3 ...

Page 87: ...sc Tsh EVT SVE One Body Type Tb EVM Tf S2PH Tdi STD TS_A Left EVJ Stop Valve OFF Fan OFF Cooling Unit Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit EVSC EVHS EVH EVLS EVL Right Suction Pipe Liquid Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG SVO S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperat...

Page 88: ...D TS_A Left EVJ Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Heating Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 192pls Heating Unit 192pls Low temperature low pressure Liquid Pipe SVO EVSC ...

Page 89: ... Tdi STD TS_A Left EVJ Stop Valve ON Fan LL Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 192pls Heating Unit Low temperature low pressure Liquid Pipe SVO Thermos...

Page 90: ...STD TS_A Left EVJ Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 192pls Cooling Unit Low temperature low pressure Liquid Pipe SVO Fan ON EVS...

Page 91: ...Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Heating Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 224pls Low temperature low pressure Liquid Pipe SVO Fan LL Indoor Unit Indoor Unit Heating Unit BS...

Page 92: ...di STD TS_A Left EVJ Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 224pls Low temperature low pressure Liquid Pipe SVO Fan ON Thermostat ON...

Page 93: ...op Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 0pls Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat ON Heating Unit 160pls In o...

Page 94: ...op Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 0pls Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat ON Heating Unit 160pls In o...

Page 95: ...ft EVJ Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit EVSC EVHS Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan ON Thermostat OFF Cooling U...

Page 96: ...OFF Indoor unit Operation ON Fan ON Thermostat ON Heating Unit EVSC EVH EVLS EVL Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat OFF EVHS 192pls Heating Unit 19...

Page 97: ...an LL Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan ON Thermostat ON Heating Unit 192pls Heating Unit Thermostat ...

Page 98: ... OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan ON Thermostat OFF Cooling Unit 192pls Cooling Unit EVS...

Page 99: ... OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Heating Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat OFF Heating Unit 224pls Heating Unit EVS...

Page 100: ...eft EVJ Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan ON Thermostat ON Heating Unit 224pls...

Page 101: ...Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator SVG S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat ON Heating Unit 0pls Heating Unit 160pls In o...

Page 102: ...Stop Valve OFF Fan OFF Indoor unit Operation ON Fan ON Thermostat ON Cooling Unit Right Suction Pipe Tsc Equalizing Pipe SVP S1NPH Tsh TL EVT SVE Tb Tg 20SA Ta Tf EVM SVL Refrigerant Regulator S2NPL INV S1PH Tdi Suction Pipe TS_A High temperature high pressure gas High temperature high pressure liquid 0pls Low temperature low pressure Liquid Pipe SVO Fan LL Thermostat ON Heating Unit 160pls In ope...

Page 103: ...ipe Stop Valve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB SVE Tb Tf EVM INVFAN Tg 2...

Page 104: ...e Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB SVE Tb Tf EVM INVFAN Tg 20SA Suction P...

Page 105: ...essure REMQ8P Multi 8HP Liquid Pipe Stop Valve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SV...

Page 106: ...Stop Valve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP SVE Tb Tf EVM INVFAN Tg 20SA Sucti...

Page 107: ...pe Stop Valve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP SVE Tb Tf EVM INVFAN Tg 20SA Su...

Page 108: ... Multi 8HP Liquid Pipe Stop Valve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP SVE Tb Tf E...

Page 109: ...alve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP SVE Tb Tf EVM INVFAN Tg 20SA Suction Pip...

Page 110: ...lve Tsc TL EVT Tsh SVE Tb Tg Tf EVM INVFAN 20SA Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP 20SB S1PH Tdi INV Suction Pipe Stop Valve EVJ Gauge Port TS_A S2NPL SVT SVL SVO Refrigerant Regulator SVG REMQ10 12P Multi 10 12HP Liquid Pipe Stop Valve Tsc TL EVT Tsh Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve S1NPH SVP SVE Tb Tf EVM INVFAN Tg 20SA Suction Pipe...

Page 111: ... regulating valve Refrigerant regulator The circuit will be closed when SVL SVO SVG are all closed In this case the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side to regulate the pressure Liquid Pipe Tsc TL S1NPH Equalizing Pipe SVP EVT Tsh SVE Tg 20SA Ta Tf Tb EVM Right Pressure regulating valve Refrigerant Regulator S1PH Tdi INV Suction Pi...

Page 112: ...ystem pressure Finally EVH and EVHS are opened and the electronic expansion valve of the indoor unit is opened to start the operation as a heating circuit In cooling operation In equalization To heating operation Indoor Unit BS Unit Cooling Unit EVSC Liquid Pipe EVHS EVH EVLS EVL Dual Pressure Gas Pipe Suction Pipe Indoor Unit BS Unit EVSC Liquid Pipe EVHS Open EVH Close EVLS Close EVL Close Dual ...

Page 113: ...d EVLS are opened and the electronic expansion valve of the indoor unit is opened to start the operation as a cooling circuit In heating operation In equalization To cooling operation Indoor Unit BS Unit Heating Unit EVSC Liquid Pipe EVHS EVH EVLS EVL Dual Pressure Gas Pipe Suction Pipe Indoor Unit BS Unit EVSC Liquid Pipe EVHS Close EVH Close EVLS Close EVL Open Dual Pressure Gas Pipe Suction Pip...

Page 114: ...30 3 7 Stopping Operation 131 4 Protection Control 132 4 1 High Pressure Protection Control 132 4 2 Low Pressure Protection Control 134 4 3 Discharge Pipe Protection Control 136 4 4 Inverter Protection Control 137 4 5 STD Compressor Overload Protection 139 5 Other Control 140 5 1 Backup Operation 140 5 2 Demand Operation 140 5 3 Heating Operation Prohibition 140 6 Outline of Control Indoor Unit 14...

Page 115: ... heat exchanger Y5E Subcooling2 EVJ Y4E Y2E Electronic expansion valve at the refrigerant charge port HTDi Value of INV compressor discharge pipe temperature compensated with outdoor air temperature HTDs Value of STD compressor discharge pipe temperature compensated with outdoor air temperature Pc S1NPH S1NPH Value detected by high pressure sensor Pe S2NPL S2NPL Value detected by low pressure sens...

Page 116: ...R5T Gas pipe1 R5T Temperature detected with the subcooling heat exchanger outlet thermistor R13T Gas pipe2 Tl R6T Liquid pipe1 R6T Liquid pipe temperature detected with the liquid pipe thermistor R14T Liquid pipe2 Tsc R9T R9T Temperature of liquid pipe between liquid stop valve and subcooled heat exchanger Tc High pressure equivalent saturation temperature TcS Target temperature of Tc Te Low press...

Page 117: ...Standby Indoor unit stop or thermostat OFF Operation mode changeover Large capacity startup Normal operation Compressor PI control Electronic expansion valve PI control Protection control in operation Malfunction Standby Indoor unit stop or thermostat OFF Oil return operation Oil return IN conditions are met Yes No Defrost IN conditions are met Yes No Operation mode changeover Yes No Defrosting op...

Page 118: ...3S OFF Outdoor unit heat exchanger Condenser OFF Outdoor unit heat exchanger Evaporator ON Outdoor unit heat exchanger Condenser OFF Outdoor unit heat exchanger Evaporator ON Y9S Four way valve Dual pressure gas pipe switch 20SB Y8S Y2S ON OFF OFF Solenoid valve Main bypass SVE Y5S Y6S ON OFF OFF Y10S Solenoid valve Hot gas SVP Y4S Y5S OFF OFF OFF Solenoid valve Refrigerant regulator liquid pipe S...

Page 119: ...epending on Te setting operating frequency etc On multi outdoor unit systems this control is made according to values of the first priority unit which is detected with the pressure sensor Te setting L M Normal factory setting H 3 6 7 8 9 10 11 Controls compressor capacity to adjust Tc to achieve target value TcS Tc High pressure equivalent saturation temperature C Te set value Make this setting wh...

Page 120: ... Standard compressor 1 STD2 Standard compressor 2 REYQ8P 10P 12P REYQ14P 16P No 2 No 1 STD1 INV No 2 No 1 INV2 INV1 REYQ18P 20P REYQ22P 24P No 1 No 2 No 3 No 1 No 3 No 2 No 4 No 1 No 3 No 2 No 4 No 1 No 3 No 2 INV INV STD1 INV STD1 INV STD1 REYQ26P 28P REYQ30P 32P No 1 No 3 No 2 No 4 No 5 No 1 No 3 No 5 No 2 No 4 No 6 No 2 No 4 No 1 No 3 No 5 No 2 No 4 No 6 No 1 No 3 No 5 INV STD1 INV STD1 STD2 IN...

Page 121: ... 2 No 5 No 3 No 6 No 7 No 3 No 6 No 1 No 4 No 2 No 5 No 7 No 2 No 5 No 3 No 6 No 1 No 4 No 7 INV STD1 INV STD1 INV STD1 STD2 REYQ42P 44P No 1 No 4 No 2 No 5 No 7 No 3 No 6 No 8 No 3 No 6 No 1 No 4 No 7 No 2 No 5 No 8 No 2 No 5 No 3 No 6 No 8 No 1 No 4 No 7 INV STD1 INV STD1 STD2 INV STD1 STD2 REYQ46P 48P No 1 No 4 No 7 No 2 No 5 No 8 No 3 No 6 No 9 No 3 No 6 No 9 No 1 No 4 No 7 No 2 No 5 No 8 No 2...

Page 122: ...62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 110Hz 11 116Hz 12 124Hz 13 132Hz 14 144Hz 15 158Hz 16 166Hz 17 176Hz 18 188Hz 19 202Hz 20 210Hz 21 52Hz ON 22 62Hz ON 23 68Hz ON 24 74Hz ON 25 80Hz ON 26 88Hz ON 27 96Hz ON 28 104Hz ON 29 116Hz ON 30 124Hz ON 31 132Hz ON 32 144Hz ON 33 158Hz ON 34 176Hz ON 35 188Hz ON 36 202Hz ON 37 210Hz ON Initial step REYQ14PY1 16PY1 STEP No INV1 INV2 1 52Hz 52...

Page 123: ... ON 33 116Hz 116Hz ON 34 124Hz 124Hz ON 35 132Hz 132Hz ON 36 144Hz 144Hz ON 37 158Hz 158Hz ON 38 176Hz 176Hz ON 39 188Hz 188Hz ON 40 202Hz 202Hz ON 41 210Hz 210Hz ON REYQ22PY1 24PY1 10 12 12HP To increase Step No STEP No unit 1 INV unit 2 INV STD 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz 92Hz 10 96Hz 96Hz 11 104Hz 104Hz 12 110Hz 110Hz 13...

Page 124: ...74Hz ON3 41 92Hz 92Hz ON3 42 104Hz 104Hz ON3 43 116Hz 116Hz ON3 44 124Hz 124Hz ON3 45 144Hz 144Hz ON3 46 158Hz 158Hz ON3 47 166Hz 166Hz ON3 48 176Hz 176Hz ON3 49 188Hz 188Hz ON3 50 202Hz 202Hz ON3 51 210Hz 210Hz ON3 REYQ 30PY1 32PY1 14 16 16HP To increase Step No STEP No unit 1 INV unit 2 INV STD 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz...

Page 125: ...16Hz 116Hz ON3 30 124Hz 124Hz 124Hz ON3 31 144Hz 144Hz 144Hz ON3 32 158Hz 158Hz 158Hz ON3 33 166Hz 166Hz 166Hz ON3 34 176Hz 176Hz 176Hz ON3 35 188Hz 188Hz 188Hz ON3 36 202Hz 202Hz 202Hz ON3 37 210Hz 210Hz 210Hz ON3 Initialstep To decrease Step No STEP No unit1 INV unit2 INV unit3 INV STD 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz ...

Page 126: ...10 12 16 16HP To increase Step No STEP No unit 1 INV unit2 INV unit3 INV STD 1 52Hz 52Hz 52Hz 2 56Hz 56Hz 56Hz 3 62Hz 62Hz 62Hz 4 66Hz 66Hz 66Hz 5 68Hz 68Hz 68Hz 6 70Hz 70Hz 70Hz 7 74Hz 74Hz 74Hz 8 80Hz 80Hz 80Hz 9 88Hz 88Hz 88Hz 10 96Hz 96Hz 96Hz 11 104Hz 104Hz 104Hz 12 110Hz 110Hz 110Hz 13 116Hz 116Hz 116Hz 14 124Hz 124Hz 124Hz 15 80Hz 80Hz 80Hz ON1 16 88Hz 88Hz 88Hz ON1 17 96Hz 96Hz 96Hz ON1 18...

Page 127: ...n changes Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode SH Tg Te SH Evaporator outlet superheated degree C Tg Suction pipe temperature C detected by the heat exchanger gas pipe thermistor R2T Te Low pressure equivalent saturated temperature C SH Tsh Te SH Evaporator outlet superheated degre...

Page 128: ...ol using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Fan step 9 Pc 3 28MPa PI control Fan step 8 Pc 3 18MPa PI control Fan step 7 Pc 3 08MPa PI control Lapse of 20 sec PI control PI control Lapse of 20 sec 1 step on outdoor unit fan Hold the current step on outdoor unit fan 1 step on outdoor unit fan ...

Page 129: ...ndensing temperature target evaporating temperature current condensing temperature and current evaporating temperature A1 A2 A3 A4 Outdoor unit 1 2 3 Condenser Condenser Condenser GR 10 GR 15 Outdoor unit 1 2 3 Condenser Condenser Condenser GR 20 GR 25 Outdoor unit 1 2 3 Condenser Condenser GR 10 GR 15 Outdoor unit 1 2 3 Condenser Evaporator Evaporator Note 1 GR is a numeric value representing the...

Page 130: ...pressor 3 M3C Outdoor unit fan 1 M1F M1F STEP 4 Ta 20 C OFF Ta 20 C STEP 4 1step 15 sec When Pc_max 2 16 MPa 1step 15 sec When Pc_max 1 77 MPa Outdoor unit fan 2 M2F M2F Electronic expansion valve Main EVM Y1E Y3E Y1E 0 pls 1375 pls 1375 pls Electronic expansion valve Subcooling EVT Y2E Y5E Y3E 0 pls 0 pls 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four wa...

Page 131: ...ectronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF...

Page 132: ...nditions The system starts heating operation with thermostat ON at a high load The system completes defrosting operation The system switches the operation mode from cooling to heating or simultaneous cooling and heating operation Control 1 Start multiple INV compressors in the system at one time 2 Start multiple STD compressors in the system at intervals of 15 seconds INV STD Pc Pe Start up STD co...

Page 133: ...bol Oil return operation Operation after oil return REYQ REMQ Compressor 1 M1C M1C 52Hz ON ON Subsequently constant low pressure control Maintain the number of compressors that were used before oil return operation 52Hz ON ON Subsequently constant low pressure control Maintain the number of compressors that were used before oil return operation Compressor 2 M2C M2C Compressor 3 M3C Outdoor unit fa...

Page 134: ...c expansion valve Thermo ON unit Normal opening degree Unit not in operation 192pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect symbol Oil return operation Electronic expansion valve EVH Y4E 600pls Electronic expansion valve EVL Y5E 760pls Electronic expansion valve EVHS Y2E 480pls Electronic expansion valve EVLS Y3E 480pls Electronic expansion val...

Page 135: ...ulation rate required for oil return operation turn ON the STD compressor every 10 seconds up to 3 units at maximum Compressor 2 M2C M2C Compressor 3 M3C Outdoor unit fan 1 M1F M1F When outdoor unit heat exchanger is condenser the fan will run under cooling fan control When outdoor unit heat exchanger is evaporator the fan will run at the fan step 7 or 8 Outdoor unit fan 2 M2F M2F Electronic expan...

Page 136: ...pansion valve Thermo ON unit Normal opening degree Unit not in operation 224 pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect symbol Oil return operation Electronic expansion valve EVH Y4E 0pls Electronic expansion valve EVL Y5E 760pls Electronic expansion valve EVHS Y2E 0pls 60pls when Pc_max 2 85MPa Electronic expansion valve EVLS Y3E 480pls Elect...

Page 137: ...2S Y9S Y3S OFF OFF Four way valve Dual pressure gas pipe switch 20SB Y8S Y2S Holds Holds Electronic expansion valve Main EVM Y1E Y3E Y1E 1375pls 0pls Electronic expansion valve Subcooling EVT Y2E Y5E Y3E SH control 0pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80pls 80pls Solenoid valve Main bypass SVE Y5S Y10S Y6S ON OFF Solenoid valve Hot gas SVP Y4S Y5S OFF OFF Solenoid valve R...

Page 138: ...pls 0pls Solenoid valve Refrigerant regulator discharge pipe SVO Y7S Y7S 0pls 0pls Solenoid valve Refrigerant regulator discharge pipe SVT Y6S Y8S 0pls 0pls Cooling indoor unit actuator Defrost operation Fan Thermo ON unit Remote controller setting Unit not in operation OFF Thermo OFF unit Remote controller setting Electronic expansion valve Thermo ON unit Normal opening degree Unit not in operati...

Page 139: ... M2C Compressor 3 M3C M3C Outdoor unit fan 1 M1F M1F Fan control Fan control Outdoor unit fan 2 M2F M2F Electronic expansion valve Main EVM Y1E Y3E Y1E 1375 pls 1375 pls Electronic expansion valve Subcooling EVT Y2E Y5E Y3E 0 pls 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S OFF OFF Four way valve Dual pressure g...

Page 140: ...s 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF Four way valve Dual pressure gas pipe switch 20SB Y8S Y2S OFF OFF Solenoid valve Main ...

Page 141: ...Ta 30 C OFF Ta 30 C STEP 4 Ta 30 C OFF Outdoor unit fan 2 M2F M2F Ta 30 C STEP 4 Ta 30 C OFF Ta 30 C STEP 4 Ta 30 C OFF Electronic expansion valve Main EVM Y1E Y3E Y1E 0 pls Electronic expansion valve Subcooling EVT Y2E Y5E Y3E 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S Holds Four way valve Dual pressure gas pipe swi...

Page 142: ...e Subcooling EVT Y2E Y5E Y3E 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S Holds Four way valve Dual pressure gas pipe switch 20SB Y8S Y2S Holds Solenoid valve Main bypass SVE Y5S Y10S Y6S OFF Solenoid valve Hot gas SVP Y4S Y5S OFF Solenoid valve Refrigerant regulator liquid pipe SVL Y3S Y4S OFF Solenoid valve Refrigera...

Page 143: ...ration Pc_max 3 47MPa Upper limit compressor step max Max Step When high pressure is limited Upper limit compressor step 2 step down Pc_max 3 47MPa After 10 sec Current step maintained Pc_max 3 24MPa Pc_max 3 55MPa After 15 sec Upper limit compressor step 1 step up After 10 sec For multi units When STD compressor is in operation STD compressor standby When STD compressor stays stopped 52Hz OFF OFF...

Page 144: ...imum value within the system Normal Operation Pc_max 3 31MPa When high pressure is limited Pc_max 2 94MPa Compressor step 7 STEP down Pc_max 3 42MPa After 10 sec Pc_max 3 31MPa Set the compressor step to STEP 1 Pc_max 3 64MPa High pressure standby When occurring 3 times within 30 min high pressure switch is activated without high pressure standby thus outputting the malfunction code E3 ...

Page 145: ...m value within the system Normal Operation Pe_min 0 34MPa Pe_min 0 39MPa During the control of low pressure protection Single type Compressor step of the present situation 0 5 Multi type 210Hz OFF OFF upper Pe_min 0 25MPa Single type 8 12HP 52Hz OFF 14 16HP 52Hz 52Hz upper limit Multi type 52Hz OFF OFF upper limit Pe_min 0 15MPa Pe_min 0 29MPa Hot gas solenoid valve 1 ON Pe_min 0 07MPa Low pressur...

Page 146: ...mpressor step 2 step down After 10 sec Pe_min 0 17MPa Pe_min 0 27MPa Pe_min 0 13MPa Current step maintained After 15 sec Pe_min 0 20MPa After 15 sec Upper limit compressor step 2 step up Upper limit compressor step 1 step up After 10 sec Pe_min 0 07MPa Low pressure standby When occurring 4 times within 30 min the malfunction code E4 is output For single unit 8 to 12HP 52Hz OFF 14 to 16HP 52Hz 52Hz...

Page 147: ...110 C Tp 125 C In control of discharge pipe temperature protection Frequency agreement or HTdi 130 C HTdi 120 C continues for 90 seconds or more 52Hz OFF OFF or HTdi 135 C HTdi 120 C continues for 10 minutes or more Discharge pipe temperature standby When occurring 3 times within 100 min the malfunction code F3 is output HTdi Value of INV compressor discharge pipe temperature Tdi compensated with ...

Page 148: ...protection control Perform the following control of integrated as well as multi units for each INV compressor Normal operation Inverter current value 14 7A Inverter current value 14 7A INV upper limit frequency max 210Hz During the control of inverter protection INV Comp upper limit step 1 step down Inverter current value 14 7A 10 seconds Current status maintained Inverter current value 14 7A cont...

Page 149: ...l operation Tfin 84 C Tfin 81 C INV upper limit frequency max 210Hz During the control of fin temperature protection INV Comp upper limit step 1 step down Tfin 84 C 10 seconds Current status maintained Tfin 81 C continues for 3 minutes INV Comp upper limit step 1 step up Tfin 93 C Fin temperature standby When occurring 4 times within 60 min the malfunction code L4 is output ...

Page 150: ...resulting from failures of STD compressor such as locking STD compressor ON Demand to operate CT detection current value 15 0A STD compressor OFF for 30 min When occurring 3 times within 90 min the malfunction code E6 is output If the power supply is reset while in operation prohibition mode the prohibition timer will continue counting when the power supply is turned ON ...

Page 151: ...pressor with operation disable setting made from operating and only operate other compressors On the system with 1 compressor REYQ8PY1 this emergency operation is not available 5 2 Demand Operation In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using Demand 1 Setting or Demand 2 Setting To operate the unit with this mode additional setting of ...

Page 152: ...iod of 5 min 4 If the evaporator inlet temperature is kept at not more than 5 C for a period of cumulative 10 min or not more than 1 C for a cumulative period of 40 min frost prevention operation will be conducted If the evaporator inlet temperature is kept at not less than 7 C for a consecutive period of 10 min the frost prevention operation will be reset 5 Thermostat status Set temperature ON OF...

Page 153: ...ode while in heating operation Heating Operation option Drain pump kit MP OFF Swing flap No 12 Yes 12 Swing flap Set wind direction Isdefrostoperationin progress Yes No 13 Yes Is hot starting in progress No DEFROST HOT START indicating lamp ON DEFROST HOT START indicating lamp OFF Yes Restart prevention operating in progress 4 min No Is test run in progress 14 1 3 Thermostat status 2 Option Aux el...

Page 154: ... C A F This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Suction air thermistor in indoor unit is used for temperatures from 18 C to 23 C A C Room temperature thermistor in remote controller is used for temperatures from 23 C to 27 C C E Suction air thermistor in indoor unit is used for tempe...

Page 155: ...re has changed from 18 C to 28 C A D This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Suction air thermistor in indoor unit is used for temperatures from 18 C to 25 C A C Room temperature thermistor in remote controller is used for temperatures from 25 C to 28 C C D And assuming suction temp...

Page 156: ...formation on page onward 6 2 3 Thermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a suction air temperature at the time of starting the dry operation Assuming that the suction air temperature at the time of starting the dry operation is Tro and the suction air temperature in operation is Tr Furthermore while in dry operation mode fans operat...

Page 157: ...ling temperature is set to 27 C Differential value 0 C Set cooling heating temp 25 C 27 C 30 C Cooling mode Control temp Heating mode Differential value 0 C Set heating temp 23 C 26 C Cooling mode Control temp Heating mode Differential value set to 4 C 22 C Cooling mode Control temp Heating mode Differential value set to 5 C Set heating temp 24 5 C 26 C 29 C Cooling mode Control temp Heating mode ...

Page 158: ...in 5 minutes if the float switch is turned OFF while the cooling thermo is ON 6 3 2 When the Float Switch is Tripped while the Cooling Thermostat is OFF 3 Malfunction residual The remote controller will display A3 and the air conditioner will come to an abnormal stop if the float switch is turned OFF and not turned ON again within 5 minutes while the cooling thermo is OFF Thermostat running Float ...

Page 159: ...ermined to have occurred AF is then displayed as operation continues 5 Malfunction residual The remote controller will display A3 and the air conditioner will come to an abnormal stop if the float switch is OFF for more than 5 minutes in the case of 4 Thermostat running Float switch Drain pump ON OFF OFF ON ON OFF 5 min 5 min 5 sec Remote controller A3 flashing malfunction stop Humidifier ON OFF R...

Page 160: ...wer As T Remote controller set temp Suction air temp becomes smaller SHS becomes higher Sub cooled degree control in heating operation This function is used to adjust the opening of the electronic expansion valve so that the high pressure equivalent saturated temperature Tc which is converted from the detected pressure of the high pressure sensor in the outdoor unit and the subcooled degree SC whi...

Page 161: ...atisfied it returns Conditions for starting freeze prevention Temperature is 1 C or less for total of 40 min or temperature is 5 C or less for total of 10 min Conditions for stopping freeze prevention Temperature is 7 C or more for 10 min continuously Conditions for starting when airflow direction is two way or three way Conditions for starting Temperature is 1ºC or less for a total of 15 minutes ...

Page 162: ...is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor S1NPH of the outdoor unit Fan residual operation While the heater turns OFF in order to prevent the activation of the thermal protector the fan conducts residual operation for a given period of time after the heat...

Page 163: ...mostat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Wind direction set LL Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Totally closed Wind direction set OFF Horizontal Horizontal Totally closed Cooling Thermostat ON in dry operation using micro computer Swing L 1 Swing Swing Swing Wind direction set L 1 Set Set Set Thermostat OFF in dry ope...

Page 164: ... is established the operations shown below will be conducted TH2 Temperature C detected with the gas thermistor TC High pressure equivalent saturated temperature Defrost ending or oil return ending or Thermostat ON Hot start ending conditions OR lapse of 3 minutes TH2 34 C Tc 52 C Hot start control Hot start in progress Fan H L remote controller setting H L remote controller setting LL OFF Remote ...

Page 165: ...ow multi flow and corner types Existing position Draft prevention position Standard Setting position Ceiling soiling prevention position Not for Multi flow type P0 P1 P2 P3 P4 P0 P1 P2 P3 P4 P0 P1 P4 P0 P1 P2 P3 P4 P0 P2 P4 P0 P1 P2 P3 P4 Draft prevention position Standard position Dirt prevention position P0 P1 P2 P3 P4 Same as existing position Prohibited P0 P1 P2 P3 P4 Separated into 5 position...

Page 166: ...1 Test Operation 156 1 1 Installation Process 156 1 2 Procedure and Outline 157 1 3 Operation when Power is Turned On 189 2 Outdoor Unit PCB Layout 190 3 Field Setting 191 3 1 Field Setting from Remote Controller 191 3 2 Field Setting from Outdoor Unit 207 ...

Page 167: ...r of the steps shown 3 Selection of Location 4 Inspecting and Handling the Unit 5 Placing the Unit 7 Field Wiring 6 Refrigerant Piping 8 Air Tight Test and Vacuum Drying 9 Pipe Insulation 10 Checking of Device and Installation Conditions 11 Additional Refrigerant Charge and Check Operation 13 Test Run Operations which require the power to be turned on ...

Page 168: ...to be taken against decreased insulation resistance in the compressor Is the pipe size proper Are the design pressures for the liquid pipe suction pipe dual pressure gas pipe and pressure equalizer pipe in case of multi units all not less than 4 0 MPa Is the pipe insulation material installed securely Liquid suction and high low pressure gas pipe need to be insulated Otherwise causes water leak If...

Page 169: ...m name Correction amount Ratio of total capacity of the connected indoor units to the rated capacity of the outdoor unit A Correction amount Model REYQ8 16PY1B 3 6 kg Model REYQ18 20P7Y1B 1 0kg Model REYQ18 32P7Y1B Model REYQ34 48P7Y1B Model REYQ22 24P7Y1B 1 5kg Model REYQ26P7Y1B 2 0kg Model REYQ28 30P7Y1B 2 5kg 100 A 120 0 5kg Model REYQ32 40P7Y1B 3 0kg 120 A 130 0 5kg 1 0kg Model REYQ42P7Y1B 3 5...

Page 170: ...s with the master unit Field settings made with the slave unit will be all invalid The check operations shown below will be automatically initiated Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate Check for erroneous wirings Check for failure to open stop valves Check for excessive refrigerant refilling Automatic judg...

Page 171: ...e stop valve The refrigerant charge port is connected to unit pipe When shipped the unit contains the refrigerant so use caution when attaching the charge hose Gauge manifold Charge hose valve To prevent entry of any impurities and insure sufficient pressure resistance always use the special tools dedicated for R 410A Use charge hose that have pushing stick for connecting to service port of stop v...

Page 172: ...d be done after performing 1 2 3 Air Tight Test and Vacuum Drying Always insulate the liquid piping the HP LP gas piping the gas piping the equalizer pipe between the outdoor units for the outdoor multi system and these pipe connections Failing to insulate the pipes may cause leaking or burns Especially be sure to insulate the HP LP gas piping as withstanding as the suction pipe because the suctio...

Page 173: ...cylinder Check whether the cylinder has a siphon pipe before charging and place the cylinder so that the refrigerant is charged in liquid form See the figure below Note Always use the proper refrigerant R 410A If charged with the refrigerant containing an improper material it may cause an explosion or accident R 410A is a mixed refrigerant so charging it as a gas will cause the refrigerant composi...

Page 174: ...at in case the total maximum refrigerant charge of the system factory and additional charge is equal to or more than 100kg you must divide your multiple outdoor system into smaller independent systems each containing less than 100kg refrigerant charge For factory charge refer to the unit name plate Important information regarding the refrigerant used This product contains fluorinated greenhouse ga...

Page 175: ...e 12HP type corresponds to the 12 7 diameter onsite piping using the accessory pipe Suction gas stop valve φ25 4 The 8HP type corresponds to the 19 1 diameter onsite piping using the accessory pipe The 10HP type corresponds to the 22 2 diameter onsite piping using the accessory pipe The 12 16 HP type corresponds to the 28 6 diameter onsite piping using the accessory pipe HP LP gas stop valve φ19 1...

Page 176: ...with the hexagon wrench JISB4648 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten the cap securely For the tightening torque refer to the item Tightening Torque Tightening torque Stop valve size Tightening torque N m Turn clockwise to close Shaft valve body Cap valve lid Service port φ 9 5 5 4 6 6 Hexagonal wrench 4 mm 13 5 16 5 11 5 13 9 φ 12 7 8 1 9...

Page 177: ... once at Setting Mode 1 H1P off and set the MONITOR MODE H1P Blinking l h h h h h h 2 Press the SET button BS2 the number of times until the LED display matches that at right For checking the number of outdoor units eight times l h h k h h h For checking the number of indoor units five times l h h h k h k 3 Press the RETURN button BS3 and read the number of units from the display of H2P through H7...

Page 178: ...port is connected to the piping inside the unit When the unit is shipped from the factory the unit s internal piping is already charged with refrigerant so be careful when connecting the charge hose After adding the refrigerant make sure to close the lid of the refrigerant charging port The tightening torque for the lid is 11 5 to 13 9 Nm See Stop valve operation procedure in chapter 1 2 5 1 for d...

Page 179: ...re For operating the push button and opening or closing the valves follow the procedure z During Automatic refrigerant charging operation the system will select charging mode cooling mode or heating mode by the temperature condition as follows When charging in cooling mode the system will stop operation when the required amount of refrigerant is charged During charging in heating mode a person mus...

Page 180: ...e any state in below 3 go to In case of cooling mode or In case of heating mode in accordance with the LED displays In case of cooling mode 7 Push the TEST button BS4 once within 5 minutes after procedure 5 4 and close the all front panels 5 After that open the valve A immediately See bottom figure on page 168 6 and watch the remote controller display of indoor unit 8 If the remote controller disp...

Page 181: ...171 5 If the front panel is opened during the operation the system cannot operate properly 6 If you leave the system without connecting the refrigerant tank or opening the valve A for 30 minutes or more the system stop operation and P2 code are displayed in remote controller In this case refer Remote controller cooling or heating mode malfunction code 7 Depending on the situation of operation such...

Page 182: ...d all connected BS indoor units Be sure to turn the power on at least 6 hours before operation in order to have power running to the crankcase heater 2 Make the onsite settings as needed using the push button BS1 BS5 on the outdoor unit PCB A1P with the power on See Field setting from outdoor unit on page 207 3 Perform the check operation following the Check Operation Method of the Service Precaut...

Page 183: ...s may continue operating for further 5 minutes at maximum z The outdoor unit fan may rotate at low speeds if the Night time low noise setting or the External low noise level setting is made but this is not a malfunction Malfunction code Installation error Remedial action E3 E4 F3 F6 UF The stop valve of the outdoor unit is left closed Open the stop valve U1 The phases of the power to the outdoor u...

Page 184: ... is complete z Record the contents of field setting Record them on the accessory REQUEST FOR THE INDICATION label And attach the label on the back side of the front panel z Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the IEC60335 2 40 And attach the label on the back side of the front panel Note After the test run w...

Page 185: ...nd check the LED display after the power is on via the service lid which is in the lid of the electric component box Operate switches with an insulated stick such as a ball point pen to avoid touching the life parts Make sure to re attach the inspection cover into the switch box cover after the job is finished If the power of some units is turned off the charging procedure can not be finished prop...

Page 186: ... via the liquid pipe stop valve service port See figure below 4 If the calculated amount of pre charging is reached close valve B At least the unit should be charged with its original amount of refrigerant refer to the nameplate on the unit before starting the automatic charging 5 After pre charging perform the refrigerant charge operation as shown below and charge the remaining refrigerant of the...

Page 187: ...m the refrigerant charging operation within the refrigerant system with one or more units with power OFF the refrigerant charging operation can not be accomplished properly For confirming the number of indoor units with power ON refer to How to check how many units are connected on page 181 In case of a multi system turn the power ON to all outdoor units in the refrigerant system To energize the c...

Page 188: ...or more the outdoor unit will stop operation and the P2 code will be displayed on the remote controller of the indoor unit Follow the procedure as described in Remote controller malfunction code display on page 180 When a malfunction occurs check the display of the remote controller and refer to Remote controller malfunction code display on page 180 9 Complete If the calculated amount of refrigera...

Page 189: ...emote controller Refer to Remote controller malfunction code display on page 180 8 Operation When the following LED display is shown open valve A and close the front panel If the front panel is left open the system can not operate properly during the refrigerant charging When the refrigerant tank is not connected or is left with the valve closed for 30 minutes or more the outdoor unit will stop op...

Page 190: ...cated in the display of the remote controller and restart the complete charging procedure When the charging amount is little the PE code may not be displayed but instead the P9 code will be displayed immediately 10 Press the BS1 MODE button once and the charging is complete Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back ...

Page 191: ...PC slave unit 2 flashing PA PH and PC all units After replacing the cylinder open valve A again and continue the work In case of an outdoor multi system replacing the refrigerant tank of the outdoor unit during the refrigerant charging operation when the display on the remote controller is not showing PA PH or PC may cause an abnormal stop of the refrigerant charging operation P8 recharge operatio...

Page 192: ...urn to setting mode 1 H1P h OFF 1 Setting mode 1 default system status Press the BS1 MODE button to switch from setting mode 1 to monitor mode 2 Monitor mode To check the number of indoor units press the BS2 SET button 5 times 3 Monitor mode Pressing the BS3 RETURN button causes the LED display to show the data on the number of indoor units that are connected 4 Monitor mode Calculate the number of...

Page 193: ... the main circuit and cause electric shock 5 After the service is finished plug the junction connecter back in Otherwise the error code E7 will be displayed on the remote controller and normal operation will not be performed For details refer to the wiring diagram labelled on the back of the electric box cover Pay attention to the fan It is dangerous to inspect the unit while the fan is running Be...

Page 194: ... cover 6 Insulation test of the main power circuit Measure the insulation resistance and check if the value is in accordance with relevant local and national regulations 7 Installation date and field setting Be sure to keep record of the installation date on the sticker on the rear of the upper front panel according to EN60335 2 40 and keep record of the contents of the field setting 1 2 6 3 Field...

Page 195: ...e of the H8P multi LED in a multi system shows which unit is the master unit k slave 1 unit l or slave 2 unit h Only the master unit is connected to the indoor units with interunit wiring For changing the set mode For field setting For field setting For test operation For resetting the address when the wiring is changed or when an additional indoor unit is installed MODE H1P TEST HWL C H SELECT IN...

Page 196: ...tton according to the required setting possibility as shown below in the field marked 3 1Possible settings for function A B F and G are ON or OFF a This setting factory setting BS1 MODE BS1 MODE BS1 MODE BS1 MODE BS1 MODE Possible functions A additional refrigerant charging operation B refrigerant recovery operation vacuuming operation C automatic low noise operation setting at nighttime D low noi...

Page 197: ...er preparation or under test operation 2 Indication of low noise operation state h standard operation factory setting k operation 3 Indication of power consumption limitation setting h standard operation factory setting k operation 1 2 6 4 Test operation Do not insert fingers rods or other objects into the air inlet or outlet When the fan is rotating at high speed it will cause injury Do not perfo...

Page 198: ...the field setting as described in the paragraph 1 2 6 3 Field setting on page 183 4 Press the button once and set to the SETTING MODE H1P LED OFF 5 Press and hold the button down for 5 seconds or more The unit will start the test operation The test operation is automatically carried out in cooling mode the H2P LED will light up and the messages Test operation and Under centralized control will dis...

Page 199: ... and under the setting mode 2 set the required function B refrigerant recovery operation vacuuming operation to ON The indoor unit BS unit and the outdoor unit expansion valves will fully open The H1P LED is on and the remote controller indicates test operation and external control and the operation will be prohibited 2 Recover the refrigerant by a refrigerant reclaimer For details see the operati...

Page 200: ...ing operation described above Indoor unit If ON button is pushed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during operation described above the operation lamp lights but the compressor does not operate ...

Page 201: ...BS3 RETURN BS4 TEST BS5 RESET HAP 1 2 3 4 1 2 3 4 DS1 DS2 Connection terminal for transmission use F1 F2 F1 F2 Q1 Q2 Indoor Outdoor Outdoor Outdoor Multi outdoor 1 Microcomputer normal monitor This monitor blinks while in normal operation and turns on or off when a malfunction occurs 2 Set mode display LED LEDs display mode according to the setting 3 BS button Used to change mode 4 Dip switch Used...

Page 202: ... and hold Cancel button for 4 seconds or more Field setting menu is displayed 2 Select Field setting list in the field setting menu and press Menu Enter button Field setting list screen is displayed 3 Highlight the mode and select desired ModeNo byusing Up Down button 4 In the case of individual setting per indoor unit current settings are displayed And SECOND CODE NO means no function Highlight S...

Page 203: ... multiple setting changes repeat 3 to 7 9 After all setting changes are com pleted press Cancel button twice CAUTION Backlight goes out and Connection under check Please wait for a moment is displayed for initialization After the initialization the basic screen returns z When an optional accessory is installed on the indoor unit settings of the indoor unit may be changed See the manual of the opti...

Page 204: ...esired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the settings 6 Push the button to return to the normal mode Example When setting the filter sign time to Filter Dirtiness High in all group unit setting set the Mode No to 10 Mode setting No to 0 and second code No to 02 MODE NO FIELD SET MOD...

Page 205: ... 23 have been selected push the BS8 BUTTON unit No and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Push the BS9 BUTTON set A and select FIRST CODE NO 6 Push the BS10 BUTTON set B and select SECOND CODE NO 7 Push the BS7 BUTTON set cancel once and the present settings are SET 8 Push the BS6 BUTTON field set to return to the NORMAL MODE 9 Example If duri...

Page 206: ... 3 Display time to clean air filter calculation Set when filter sign is not to be displayed Display No display 4 11 21 7 Airflow adjustment OFF Completion of airflow adjustment Start of airflow adjustment 5 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operation output Malfunction output 6 1 ON OFF input from outs...

Page 207: ...unit Floor standing unit Concealed floor standing unit Roundflow 4 way blow 2 way blow Corner type FXFQ FXZQ FXCQ FXKQ FXDQ FXDQ FXSQ FXMQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Room temperature thermistor in remote controller Set fan speed when thermostat OFF Airflow adjustment Ceiling height Airflow direction Airflow direction adjustment Down flow operation Airflow dire...

Page 208: ...the airflow auto adjustment function to make settings Airflow auto adjustment The volume of blow off air is automatically adjusted to the rated quantity b Select External Static Pressure with Remote Controller Check that 01 OFF is set for the SECOND CODE NO in MODE NO 21 for airflow adjustment on an indoor unit basis in Table 4 The SECOND CODE NO is set to 01 OFF at factory setting Change the SECO...

Page 209: ...Fan Stop When Thermostat is OFF 10 Setting of operation mode to AUTO This setting makes it possible to change differential values for mode selection while in automatic operation mode The automatic operation mode setting is made by the use of the Operation Mode Selector button Mode No First Code No Second Code No Remarks 12 22 0 01 Indoor unit thermostat ON OFF signal is provided 03 Output linked w...

Page 210: ...n the Case of FXFQ100 125 Caution 1 The air conditioner starts operation suddenly after power failure reset or the main power supply turned on again Consequently the user might be surprised with question for the reason why 2 In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit op...

Page 211: ...owing airflow direction setting according to the respective purpose Setting Table Some indoor unit models are not equipped with draft prevention upward function 17 Setting of the Static Pressure Selection for FXDQ model Mode No First Code No Second Code No Setting 13 23 1 01 F 4 direction airflow 02 T 3 direction airflow 03 W 2 direction airflow Mode No First Code No Second Code No Setting 13 23 3...

Page 212: ...residual operation for one minute after the thermostat is stopped For the purpose of preventing dust on the air filter from falling off 21 Interlocked Operation between Humidifier and Drain Pump This is used to interlock the humidifier with the drain pump When water is drained out of the unit this setting is unnecessary MODE NO FIRST CODE NO SECOND CODE NO External Static Pressure 13 23 06 01 30Pa...

Page 213: ...t to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in Switch only when heat reclaim ventilation is built in Mode No First Code No Second Code No Contents 15 25 5 01 02 Individual operation of ventilation ...

Page 214: ... air conditioners etc refer to the instruction manual attached NOTICE Enter the group No and installation place of the indoor unit into the attached installation table Be sure to keep the installation table with the operation manual for maintenance 1 Basic screen 1 Press and hold Cancel button for 4 seconds or more Field setting menu in displayed 2 Field setting menu screen 2 Select in the field s...

Page 215: ...p No Setting Example Caution When turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display This is not an operative fault MODE NO FIELD SET MODE 3 4 GROUP NO 2 1 5 V0916 Indoor Outdoor Outdoor Outdoor F1 F2 F1 F2 Indoor Outdoor Outdoor Outdoor F1 F2 F1 F2 Centralized Rem...

Page 216: ...mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by centralized remote controller only Cannot be turned on off by remote controller OFF control only possible by remote controller Used when you want to turn on by centralized remote controller only and off by remote controller o...

Page 217: ...ified operation individual operation by centralized remote controller or operation controlled by timer Unified OFF individual stop by centralized remote controller or timer stop ON OFF control impossible by remote controller Rejection Example Rejection Example Rejection Example Rejection Acceptance 0 Rejection 10 Acceptance Example Acceptance Example 1 Example Rejection 11 OFF control only possibl...

Page 218: ...h No 29 223 227 3 Setting of demand operation 1 Used to place limits on the compressor operating frequency to control the upper limit of power consumption 1 Mode 1 of Demand 1 60 or less of rating 2 Mode 2 of Demand 1 70 or less of rating 3 Mode 3 of Demand 1 80 or less of rating 4 Demand 2 40 or less of rating For setting with the use of external control adaptor Set the system to External control...

Page 219: ...tion of outdoor unit s concerned and to conduct emergency operation of the system only with operable or outdoor unit s Make this setting while in Setting mode 2 For system with multiple outdoor units Set with No 38 39 or 40 231 234 8 Additional refrigerant charging 1 If a necessary amount of refrigerant cannot be charged due to the stop of outdoor unit operate the outdoor unit and then refill refr...

Page 220: ...spare parts PCB After the replacement by the spare PCB be sure to make settings shown below When you change the main PCB A1P to spare parts PCB please carry out the following setting DIP Switch Detail DS No Item Contents DS1 2 Power supply specification ON 200V class 220V OFF Factory setting of spare PCB 400V class 380V DS1 3 Except Multiple use Cooling only Heat pump setting ON Cooling only setti...

Page 221: ...witches HEAT RECOVERY 8HP REYQ8PY1B HEAT RECOVERY 10HP REYQ10PY1B HEAT RECOVERY 12HP REYQ12PY1B HEAT RECOVERY 14HP REYQ14PY1B HEAT RECOVERY 16HP REYQ16PY1B For Europe Set DS1 4 and DS2 3 to ON Set DS1 4 to ON Set DS1 4 and DS2 2 to ON Set DS1 3 DS1 4 and DS2 2 to ON Set DS1 3 DS1 4 and DS2 3 to ON ON OFF DS1 DS2 1 2 3 4 1 2 3 4 A1P Main ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4...

Page 222: ... 8HP REYQ8PY1B HEAT RECOVERY 10HP REYQ10PY1B HEAT RECOVERY 12HP REYQ12PY1B HEAT RECOVERY 14HP REYQ14PY1B HEAT RECOVERY 16HP REYQ16PY1B For Europe Set DS1 3 and DS2 2 to ON Set DS1 3 and DS2 2 to ON Set DS1 3 and DS2 2 to ON Set DS1 3 DS2 1 and DS2 4 to ON Set DS1 3 DS2 1 and DS2 3 to ON A3P Sub ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 ...

Page 223: ...COVERY 12HP REMQ12PY1B HEAT RECOVERY 14HP REMQ14PY1B HEAT RECOVERY 16HP REMQ16PY1B For Europe Set DS1 4 DS2 2 and DS2 3 to ON Set DS1 4 and DS2 4 to ON Set DS1 4 DS2 2 and DS2 4 to ON Set DS1 4 DS2 3 and DS2 4 to ON Set DS1 4 DS2 2 DS2 3 and DS2 4 to ON ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4...

Page 224: ...in servicing the system e Monitor mode H1P blinks Used to check the program made in Setting mode 2 Mode changing procedure 1 LED display MODE H1P TEST H2P COOL HEAT select Low noise H6P Demand H7P Multi H8P IND H3P MASTER H4P SLAVE H5P Single outdoor unit system h h k h h h h h Outdoor multi system Master h h k h h h h k Slave 1 h h h h h h h l Slave 2 h h h h h h h h Pushbutton switches BS1 MODE ...

Page 225: ... 1 Initial condition Setting mode 2 Setting item selection Set Setting condition selection Set Setting condition Contents display Press BS3 RETURN button one time Press BS3 RETURN button one time Press BS3 RETURN button one time Press BS1 MODE button one time Monitor mode Check item selection Set Press BS3 RETURN button one time Contents display Press BS3 RETURN button one time Press BS1 MODE butt...

Page 226: ...e 1 Should the system be set to any mode other than that push the MODE BS1 button to set the system to Setting mode 1 Check the system for each condition through LED displays Refer to information in table on the right Pushing the RETURN BS3 button will bring the system to the initial state of Setting mode 1 V2763 Current operating conditions h Normal k Abnormal l In preparation or in check operati...

Page 227: ...operation Used to forcedly turn ON the ENECUT Be noted that the ENECUT is only functional with outdoor unit in the stopped state Japanese domestic model only 25 Setting of external low noise level Sets low noise level when the low noise signal is input from outside 26 Night time low noise operation start setting Sets starting time of nighttime low noise operation Night time low noise setting is al...

Page 228: ... the BS unit set to default enabling the minute heating prevention setting of outdoor unit will enable the minute heating prevention setting of all BS units connected to the outdoor unit BS unit default setting To make this setting by BS unit make a change to the minute heating prevention setting of the BS unit In this case enable the outdoor unit setting 42 Setting of BS Cool Heat selection contr...

Page 229: ... k h High k h h h k k k 9 Tc setting k h h k h h k Low k h h h h h k Normal factory setting k h h h h k h High k h h h k h h 10 Defrost changeover setting k h h k h k h Slow defrost k h h h h h k Normal factory setting k h h h h k h Quick defrost k h h h k h h 11 Sequential operation setting k h h k h k k OFF k h h h h h k ON k h h h h k h 12 External low noise setting demand setting k h h k k h h...

Page 230: ...setting 1 k h k k k k h 60 demand k h h h h h k 70 demand k h h h h k h 80 demand k h h h k h h 32 Normal demand setting k k h h h h h OFF k h h h h h k Demand 1 k h h h h k h Demand 2 k h h h k h h 38 Emergency operation Master unit is inhibited to operate k k h h k k h OFF k h h h h h k Master unit operation Inhibited k h h h h k h 39 Emergency operation Slave unit 1 is inhibited to operate k k ...

Page 231: ... l h h h k h k 6 Number of connected BS units 2 l h h h k k h 7 Number of connected zone units Fixed to 0 l h h h k k k 8 Number of outdoor units 3 l h h k h h h 9 Number of BS units 4 l h h k h h k Lower 4 digits upper 10 Number of BS units 4 l h h k h k h Lower 4 digits lower 11 Number of zone units l h h k h k k Lower 6 digits 12 Number of terminal units 5 l h h k k h h Lower 4 digits upper 13 ...

Page 232: ...ss is expressed as a binary number consisting of the lower 6 digits 0 63 In c the address is 010110 binary number which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for No 12 and 13 respectively 0 128 In d the address for No...

Page 233: ...SS2 1 2 1 2 In case of the indoor unit connect as the cool only unit it wire he terminal of the last BS unit Final BS unit To the indoor unit where the selection of heating and cooling is available 1st unit Final unit Cooling only F1 F2 OUT D BS F1 F2 F1 F2 IN D OUT D BS F1 F2 F1 F2 Outside unit Branch wiring Use 2 core wires There is no polarity Cool heat selector remote control wiring Use 3 core...

Page 234: ...e external control adaptor for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Level 1 Level 2 or Level 3 for set item No 22 Setting of nighttime low noise level 2 If necessary while in Setting mode 2 select the setting condition i e 20 00 22 00 or 24 00 for set item No 26 Setting of start time of nighttime low noise operation Use the start time as a guide s...

Page 235: ...w noise mode is instructed can be set with Night time low noise level setting Factory setting is OFF Night time Operation sound level set with Night time low noise setting Set with Night time low noise start setting Factory setting is PM 10 00 Set with Night time low noise end setting Factory setting is AM 8 00 PM 8 00 PM 10 00 PM 0 00 AM 6 00 AM 7 00 AM 8 00 V3079 Operation sound Rated operation ...

Page 236: ...f alternate demand to ON 2 While in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode Description of setting Setting procedure Setting item Condition Description External control adaptor Outdoor unit PCB Demand 1 Level 1 Operate with power of approx 60 or less of the rating Short circuit between 1 and C of the terminal block TeS1...

Page 237: ...r consumption 70 of rated power consumption 60 of rated power consumption The power consumption set with Demand 1 level setting When the Normal demand setting is set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory V3082 Power consumption Rated power consumption 80 of rated power consumption 70 ...

Page 238: ...e 2 H1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Setting No you want e Push the BS3 RETURN button one time and the present setting content is displayed Push the BS2 SET button several times and match the LED display with the setting content as shown...

Page 239: ...z z z z l Mode 2 Factory setting z z z z l z Mode 3 z z z l z z 26 Night time low noise operation start setting z z z PM 8 00 z z z z z l PM 10 00 Factory setting z z z z l z PM 0 00 z z z l z z 27 Night time low noise operation end setting z z AM 6 00 z z z z z l AM 7 00 z z z z l z AM 8 00 Factory setting z z z l z z 29 Capacity precedence setting z z Low noise precedence Factory setting z z z z...

Page 240: ...uming mode to ON The respective electronic expansion valve of indoor and outdoor units are fully opened H2P turns to display TEST OPERATION blinks TEST OPERATION and UNDER CENTRALIZED CONTROL are displayed on the remote controller and the all indoor outdoor unit operation is prohibited After setting do not cancel Setting Mode 2 until completion of refrigerant recovery operation d Collect the refri...

Page 241: ...se the vacuum pump to perform vacuuming operation e Press Mode button BS1 once and reset Setting Mode 2 3 2 8 Check Operation Detail h h k h h h h h l h h h h k h l h h h k h h l h h h k k h l h k h h k h l h k h k h h l h h k h h h l h h k h k h l h h k k h CHECK OPERATION FUNCTION Press the MODE button BS1 once and set to SETTING MODE 1 H1P OFF Unit stopping Pressure equalizing Cooling start con...

Page 242: ... While in heating or cooling heating concurrent operation One out of three connected outdoor units malfunctions Emergency operation is possible Two out of three connected outdoor units malfunction Emergency operation is not possible One out of two connected outdoor units malfunctions Emergency operation is not possible Emergency operation by setting outdoor unit PCB In malfunction stop state of th...

Page 243: ... h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink H1P H7P H8P Outdoor unit 1 h h k h h h h k Outdoor unit 2 h h h h h h h l Outdoor unit 3 h h h h h h h h Factory setting LED display k ON h OFF l Blink Step H1P H7P 1 Press and hold the PAGE button BS1 for 5 sec or more k h h h h h h 2 Press the OPERATE button BS2 38 times k k h h k k h 3 Press the CHECK button BS...

Page 244: ... more k h h h h h h 2 Press the OPERATE button BS2 38 times k k h h k k h 3 Press the CHECK button BS3 once k h h h h l h 4 Press the OPERATE button BS2 once k h h h h h l Factory setting 5 Press the CHECK button BS3 twice k h h h h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more k h h h h h h 2 Press ...

Page 245: ... button BS2 39 times k k h h k k k 3 Press the CHECK button BS3 once k h h h h l h 4 Press the OPERATE button BS2 once k h h h h h l Factory setting 5 Press the CHECK button BS3 twice k h h h h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more k h h h h h h 2 Press the OPERATE button BS2 40 times k k h k...

Page 246: ...o heating prevention setting of every BS unit In this case enable the outdoor unit setting 3 2 11 Reduction of Cooling Heating Selection Time of BS Units Make this setting to reduce selection time between cooling and heating of the BS units with careful attention paid to the following points This setting is only enabled in case the refrigerant piping length between every BS unit connected to the o...

Page 247: ...e Limit 276 3 9 AJ Indoor Unit Malfunction of Capacity Determination Device 277 3 10 C1 Indoor Unit Failure of Transmission Between Indoor unit PCB and Fan PCB 278 3 11 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 280 3 12 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 281 3 13 C6 Indoor Unit Failure of Combination Between Indoor unit PCB and Fan PCB 282 3 14 C9 Indo...

Page 248: ...urrent of Inverter Compressor 325 3 42 L9 Outdoor Unit Inverter Compressor Starting Failure 327 3 43 LC Outdoor Unit Malfunction of Transmission between Inverter and Control PCB 330 3 44 P1 Outdoor Unit Inverter Over Ripple Protection 333 3 45 P4 Outdoor Unit Malfunction of Inverter Radiation Fin Temperature Rise Sensor 335 3 46 PJ Outdoor Unit Faulty Field Setting after Replacing Main PCB or Faul...

Page 249: ...nction of Transmission between Optional Controllers for Centralized Control 372 4 3 MA Improper Combination of Optional Controllers for Centralized Control 373 4 4 MC Address Duplication Improper Setting 375 5 Troubleshooting OP Unified ON OFF Controller 376 5 1 Operation Lamp Blinks 376 5 2 Display Under Centralized Control Blinks Repeats Single Blink 378 5 3 Display Under Centralized Control Bli...

Page 250: ...These symptoms indicate that the system is controlled so as not to put unreasonable loads on the system Normal operation The system will automatically start operation after a lapse of five minutes Pressing the TEMP ADJUST button immediately resets the system The remote controller displays UNDER CENTRALIZED CONTROL which blinks for a period of several seconds when the OPERATION button is depressed ...

Page 251: ...operation Indoor and outdoor units After the completion of defrosting operation the system is switched to heating operation Defrosted moisture turns to be vapor and comes out from the units Normal operation 11 The system produces sounds Indoor unit Immediately after turning ON the power supply indoor unit produces ringing sounds These are operating sounds of the electronic expansion valve of the i...

Page 252: ...the system is checking to be sure the remote controller is normal Normal operation This code is displayed for a period of approximately one minute at maximum 16 The outdoor unit compressor or the outdoor unit fan does not stop After stopping operation It stops in order to prevent oil or refrigerant from dwelling Normal operation It stops after a lapse of approximately 5 to 10 minutes 17 The outdoo...

Page 253: ...lation Timer setting Service Contact Model Info Convenient functions Setting status list Clock setting Language changeover Basic Screen Operation mode changeover Fan speed control Menu display Confirmation of each setting On Off Cancel Operation lamp Field Setting Menu Test operation ON OFF Register Service Contract Field setting list Group No setting Indoor unit AIRNET No set Outdoor unit AIRNET ...

Page 254: ...ective action specified for the particular model 1 Checking a malfunction or warning Operation Status Display Abnormal shutdown The system stops operating The operation lamp green starts to blink The message Malfunction Press Menu button will appear and blink at the bottom of the screen Warning The system continues its operation The operation lamp green remains on The message Warning Press Menu bu...

Page 255: ...he following operations 1 short beep Conduct steps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed Continuous beep No abnormality 3 Press the MODE selector button The left 0 upper digit indication of the malfunction code flashes 4 Malfunction code upper digit diagnosis Press the UP or DOWN button and change t...

Page 256: ...Troubleshooting by Remote Controller SiBE37 701_B 245 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed Advance button Backward button ...

Page 257: ...ton is pressed 1 Press INSPECTION TEST button If no button is pressed for 1 minute equipment returns to normal status When MODE selector button is pressed or no button is pressed for 1 minute equipment returns to normal status If no button is pressed for 1 minute equipment returns to normal status 3 Press MODE selector button 5 Press MODE selector button ...

Page 258: ...ystem code Indoor unit type code Progression code 0 7 1 F C J Example of capacity code display Example model Display FXCQ25 028 FXFQ63 071 Indoor unit system code Indoor unit type code Display Product classification System classification 1 VRV system VAV indoor unit 2 VRV system Outdoor air processing unit F VRV system Standard indoor unit H VRV system New ceiling suspended cassette Display Type M...

Page 259: ... to Enter the Service Mode Service Mode Operation Method 1 Select the mode No Select the desired item from the Service menu and then press Menu Enter button 2 Select the Item 2 Select the desired Unit No using the Up Down buttons The corresponding data will be displayed For details refer to the table in next page Basic screen Field setting mode Service mode Press and hold Cancel button for 4 secon...

Page 260: ...s 6 MP Drain pump ON OFF 7 52H Electric heater ON OFF 8 Hu Humidifier ON OFF 9 Anti freezing Anti freezing control ON OFF 3 Indoor Status Display 2 2 1 Unit No Select the Unit No you want to check SkyAir VRV 2 Th1 Suction air thermistor Suction air thermistor 3 Th2 Heat exchanger thermistor Heat exchanger liquid pipe thermistor 4 Th3 Heat exchanger gas pipe thermistor 5 Th4 Discharge air thermisto...

Page 261: ... A unit No can be transferred to another 2 Transfer Unit No 8 Sensor Address Display Unit No 0 15 Select the Unit No you want to check Code 00 01 02 03 04 05 06 07 08 09 Remote controller thermistor C Suction air thermistor C Heat exchanger liquid pipe thermistor C Heat exchanger gas thermistor C Indoor unit address No Outdoor unit address No BS unit address No Zone control address No Cooling Heat...

Page 262: ...wing operation Press the ON OFF button after the completion of test run mode setting and a test run starts The remote controller will display TEST RUN on it 2 7 Remote Controller Self Diagnosis Function The following will be displayed on the screen when a malfunction or a warning occurs during operation Check the malfunction code and take the corrective action specified for the particular model No...

Page 263: ...een starts to blink The message Malfunction Press Menu button will appear and blink at the bottom of the screen Warning The system continues its operation The operation lamp green remains on The message Warning Press Menu button will appear and blink at the bottom of the screen Press the Menu Enter button to check the malfunction code Take the corrective action specific to the model Malfunction co...

Page 264: ...f high pressure switch 286 E4 l Actuation of low pressure sensor 288 E5 l Inverter compressor motor lock 290 E6 l STD compressor motor overcurrent lock 292 E7 l Malfunction of outdoor unit fan motor 293 E9 l Malfunction of electronic expansion valve coil Y1E Y5E 296 F3 l Abnormal discharge pipe temperature 298 F6 l Refrigerant overcharged 300 F9 l Malfunction of BS unit electronic expansion valve ...

Page 265: ...ssion between indoor and outdoor units in the same system 357 UA l Improper combination of indoor and outdoor units indoor units and remote controller 358 UC k Address duplication of centralized controller 364 UE l Malfunction of transmission between centralized controller and indoor unit 365 UF l System is not set yet 368 UH l Malfunction of system refrigerant system address undefined 369 Central...

Page 266: ...lfunction Abnormal outdoor temperature Ta sensor malfunction short circuited or open H9 Abnormal discharge pipe temperature Td malfunction F3 Abnormal heat exchanger temperature Refrigerant overcharged F6 BS unit electronic expansion valve malfunction BS EVH disconnected Y4E F9 BS EVL disconnected Y5E BS EVHS disconnected Y2E BS EVLS disconnected Y3E BS EVSC disconnected Y1E Current sensor malfunc...

Page 267: ...h h l h h 1 F6 l h l l h l h h h h l h h l l F9 l l h h l l h h h l l h h l l l h h l h l h h l l l h h l l l h h l l l h l h h l h h l l l h l h l l h h l l J2 l h l l h l h h l h l h h h h l h h 1 l h h h h l h l l h h h h l h l J3 l h h l l l h h h h l h h l h h h h l h l l h h h h l l h J4 l h l h h l h h h h l h h J5 l h l h l l h h h h l h h J6 l h l l h l h h h h l h h J7 l h l l l l h h h ...

Page 268: ... Reversed phase malfunction ON Abnormal power supply voltage Insufficient INV voltage U2 INV open phase single phase Abnormal charge of capacitor of INV main circuit Test run not carried out yet Test run not carried out yet U3 Faulty transmission between indoor and outdoor units IN OUT transmission malfunction U4 System malfunction Faulty transmission between outdoor units Malfunction caused when ...

Page 269: ...h h l h h l l l h h h h l h l l l U7 l h l l l l h h h h l h h l l l h h h h l h l l l l h h h h l l h l l l h h h h l l l l l l h h h l l h h l l l h h h l l h l l l l h h h l l l h l l l h h h l l l l l l U9 l l h h l l h h h h l h h l l UA l l h l h l h h h h l l h l l l h h h l l h h l l l h h h l l h l l l l h h l h l h l l l l h h l h l l h l l l h h l l l h l l l l h h l l l l h l l l h h l...

Page 270: ...r set to external ON OFF terminal Supposed Causes Actuation of external protection device Improper field set Defect of indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Actuation of external protection device Change the second code No to 01 or 02 Replace the indoor unit PCB YES YES NO NO External protecti...

Page 271: ...ed from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of indoor unit PCB External factor Noise etc Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The indoor unit PCB is normal External factor other than malfunction for example noi...

Page 272: ... FXMQ FXHQ Option FXMQ200 250M Option FXAQ Option Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF Supposed Causes 220 240V power supply is not provided Defect of float switch or short circuit connector Defect of drain pump Drain clogging upward slope etc Defect of indoor unit PCB...

Page 273: ... X8A or X15A disconnected Becomes normal when X8A or X15A of the indoor unit PCB is short circuited YES YES NO NO NO YES YES NO YES YES NO YES NO Water builds up in the drain pan The float switch functions normally The drain pump is connected to X25A or terminals Y1 and Y2 of the indoor unit PCB The drain pump works when the power supply is reset for the indoor unit The voltage of terminals Y1 and...

Page 274: ...sion Conditions When the fan revolutions do not increase Supposed Causes Broken wires in short circuit of or disconnection of connectors from the fan motor harness Faulty fan motor Broken wires or faulty insulation Abnormal signal output from the fan motor Faulty circuit Faulty PCB Instantaneous disturbance in the power supply voltage Fan motor lock Due to motor or external causes The fan does not...

Page 275: ... be lightly rotated by hand Replace the fan motor Disconnect the connector from the fan motor and then make measurement of resistance between pins 2 Is the resistance between the pins not less than the judgement criteria Replace the fan motor Replace the indoor unit PCB 1 If any junction connector is provided between the connector X20A on the indoor unit PCB and the fan motor also check whether or...

Page 276: ...even at the maximum output voltage to the fan Supposed Causes Faulty indoor fan motor Broken wires Faulty contact Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Properly connect the connectors At this time check for any faulty connector contact or broken wires Check the indoor unit fan motor and the wiring circuits of...

Page 277: ...fan motor Detection from the current flow on the fan PCB when the fan motor starting operation Malfunction Decision Conditions An overcurrent flows The RPM is less than a certain level for 6 seconds A position error in the fan rotor continues for 5 seconds or more An overcurrent flows Supposed Causes The clogging of a foreign matter The disconnection of the fan motor connectors X1A and X2A The dis...

Page 278: ... power and wait for 10 minutes There is a foreign matter around the fan The fan motor connectors X1A and X2A of the fan PCB A2P are disconnected The connectors between the indoor PCB A1P and the fan PCB A2P are disconnected The fuse F3U white on the fan PCB A2P has no continuity The fan can be moved lightly by hand after the fan motorconnectorof the fan PCB A2P is removed The resistance between th...

Page 279: ...ndoor PCB A1P blinks and the HAP lamp of the fan PCB A2P is off 1 Measurement of power wire connector Remove the X1A connector from the fan PCB A2P and measure the resistance between the U and V V and W and W and U phases of the motor connector with five conductors and check that each phase are balanced within a permissible dispersion range of 20 2 Measurement of signal wire connector Remove the X...

Page 280: ...he limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the micro switch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time about 30 seconds Error code is displayed but the system operates continuously Supposed Causes Defect of swing motor Defect of connection cable power supply and limit switch Defect of airf...

Page 281: ...r Take the cam mechanism apart reassemble and turn on again Is power supply 220 240V provided Indoor unit is a model equipped with a swing flap function The swing motor works when the power supply is turned off and then back on The connector is connected to X9A of the indoor unit PCB The limit switch functions normally The connecting cable is short circuited or disconnected After turningtheswing f...

Page 282: ...nction Connection defect on signal line Wiring defect Instantaneous blackout others Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO YES Correct any fault NO YES Check and correct each wiring It is possible to have external factor such as brownout and instantaneous blackout There are problems on the condition of powe...

Page 283: ...lectronic expansion valve main body by using micro computer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing micro computer Either of the following conditions is seen caused occurs while the unit stops operation z Temperature of suction air R1T temperature of liquid pipe of heat exchanger R2T 8 C z Temperature of liquid pipe of heat exchan...

Page 284: ...xpansion valve is connected to X7A of indoor unit PCB Check 1 of electronic expansion valve coil indicates normal Relay cables short circuit or disconnected 1 How to check the electronic expansion valve coil Remove the connector for electronic expansion valve X7A from PCB Measure the resistance value between pins and check the continuity to judge the condition White 1 Red 5 Orange 3 φ1 φ3 M φ2 φ4 ...

Page 285: ...able Models Indoor units except FXFQ models Method of Malfunction Detection Check coil condition of electronic expansion valve by using micro computer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing micro computer Supposed Causes Defective drive of electronic expansion valve Defective PCB of indoor unit Defective relay cables ...

Page 286: ... indoor unit PCB Check 1 of electronic expansion valve coil indicates normal Relay cables short circuit or disconnected 1 How to check the electronic expansion valve coil Remove the connector for electronic expansion valve X7A from PCB Measure the resistance value between pins and check the continuity to judge the condition White 1 Red 5 Orange 3 φ1 φ3 M φ2 φ4 Yellow 2 Brown 6 Blue 4 1 White 2 Yel...

Page 287: ...h changes from ON to OFF while the compressor is in non operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO YES Modify the drai...

Page 288: ...determined Malfunction Decision Conditions When the capacity code is not saved to the PCB and the capacity setting adaptor is not connected When a capacity that does not exist for that unit is set Supposed Causes The capacity setting adaptor was not installed Defect of indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage ma...

Page 289: ...0P Method of Malfunction Detection Check the condition of transmission between indoor PCB A1P and PCB for fan A2P using computer Malfunction Decision Conditions When normal transmission is not conducted for certain duration Supposed Causes Connection defect of the connecter between indoor PCB A1P and PCB for fan A2P Malfunction of indoor PCB A1P Malfunction of PCB for fan A2P External factor such ...

Page 290: ...ort circuit and connect X70A back to original condition Determination 01 Normal Other than 01 Transmission defect on indoor PCB Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO YES Connect the connector accurately NO YES Replace PCB for fan A2P Connect it and operate It is possible to have a cause such as instantaneous blackout Unde...

Page 291: ...e unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PCB Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO Normal The malfunction is caused by faulty contact YES YES NO Remove the thermistor from the in...

Page 292: ...ning Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PCB Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO Normal The malfunction is caused by faulty contact YES YES NO Remove the thermistor from the indoor...

Page 293: ...t Supposed Causes The possible causes are Malfunction of PCB for fan A2P Connection defect of capacity setting adaptor Setting mistake on site Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES Replace it with correct PCB for fan A2P YES After establishing transmission for indoor and outdoor diagnose the operation aga...

Page 294: ...the unit is running Supposed Causes Defect of indoor unit thermistor R1T for suction air Defect of indoor unit PCB Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO Normal The malfunction is caused by faulty contact YES YES NO Remove the thermist...

Page 295: ...running Supposed Causes Defect of remote controller thermistor Defect of remote controller PCB Troubleshooting Note 1 How to delete the record of malfunction codes Press the ON OFF button for 4 seconds and more while the malfunction code is displayed in the inspection mode Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before conne...

Page 296: ...s in the hardware section between the indoor unit and the outdoor unit are not normal Supposed Causes Defect of outdoor unit PCB A1P Defective connection of inside outside relay wires Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO External factor other than malfunction for example noise etc YES YES NO Connect the i...

Page 297: ... the high pressure protection switch opens Malfunction Decision Conditions Error is generated when the high pressure switch activation count reaches the number specific to the operation mode Reference Operating pressure of high pressure switch Operating pressure 4 0MPa Reset pressure 2 85MPa Supposed Causes Actuation of outdoor unit high pressure switch Defect of high pressure switch Defect of out...

Page 298: ...e 1 Replace the high pressure sensor Replace the main PCB A1P Check if the high pressure value and the actualmeasurementvalue by pressure sensor are the same The high pressure sensor is normal and the pressure detected with the PCB is also normal The high pressure has really become high Referring to information on P 385 remove the causes by which the high pressure has become high 1 Make a comparis...

Page 299: ...od of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor Malfunction Decision Conditions Error is generated when the low pressure is dropped under compressor operation Operating pressure 0 07MPa Supposed Causes Abnormal drop of low pressure Lower than 0 07MPa Defect of low pressure sensor Defect of outdoor unit PCB A1P Stop valve is not opened Clogged ...

Page 300: ...n P 452 2 Make measurement of voltage of the pressure sensor YES NO NO YES Replace the low pressure sensor Replace the main PCB A1P Is the stop valve open 1 Mount a pressure gauge on the low pressure service port 2 Reset the operation using the remote controller and then restart the operation Are the characteristics of the low pressure sensor normal See 1 Check if the low pressure value and the ac...

Page 301: ...n signal from UVW line connected between the inverter and compressor and the malfunction is detected when any abnormality is observed in the phase current waveform Malfunction Decision Conditions This malfunction will be output when the inverter compressor motor does not start up even in forced startup mode Supposed Causes Inverter compressor lock High differential pressure 0 5MPa or more Incorrec...

Page 302: ...ion resistance of the compressor is low not more than 100kΩ The compressor coil has disconnection of wires Restart and check the operation Check if the condition occurs again Check if the start mode is in the high differential pressure not less than 0 5 MPa Conclude the work There is a possibility of defect of pressure equalizing Check the refrigerant circuit Defect of pressure equalizing Check th...

Page 303: ...he possible factors may be chattering due to rough MgS contact 2 Abnormal case The current sensor value is 0 during STD compressor operation The current sensor value is more than 15 0A during STD compressor stop Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the stop valve open NO Open the stop valve Obstacle exists around the air...

Page 304: ...umber of rotation detected by hole IC during the fan motor operation Malfunction Decision Conditions Overcurrent is detected for INVERTER PCB A2P or fan INVERTER PCB A5P System down is caused by 4 times of detection In the condition of fan motor rotation the number of rotation is below the fixed number for more than 6 seconds System down is caused by 4 times of detection Supposed Causes Failure of...

Page 305: ...r 1 relay connector or X1A X2A of compressor inverter PCB Fan motor 2 relay connector or X1A X2A of fan inverter PCB Check the connection status of the connectors Check if any connector is disconnected Fan motor 1 Both power supply wire and signal wire are all white Fan motor 2 Both power supply wire and signal wire are red in the PCB side and white in the motor side Check the color of relay conne...

Page 306: ...ue between UVW phases of fan motorisoutofbalance or short circuit between UVW phases Referring to the information on P 382 Check 2 Check fan motor connector signal wire The signal wire short circuits between Vcc and GND and between UVW and GND Put the power supply ON to check the following LED lamps 1 HAP lamp on the compressor PCB A2P 2 HAP lamp on the fan inverter PCB A5P HAP lamp for the A5P do...

Page 307: ...Applicable Models REYQ8P 48P Method of Malfunction Detection Check disconnection of connector Check continuity of electronic expansion valve Malfunction Decision Conditions No current is detected in the common COM when power supply is ON Supposed Causes Disconnection of connectors for electronic expansion valve Y1E Defect of electronic expansion valve coil Defect of outdoor unit main PCB A1P ...

Page 308: ...hen Confirmation of malfunction 4 shows as follows Electronic expansion valve for refrigerant charge Y4E for Single Y2E for Multi When Confirmation of malfunction 4 shows as follows Electronic expansion valve for subcooling Y2E Y5E for Single Y3E for Multi Explanation of Master unit Slave unit 1 Slave unit 2 System The connector of outdoor unit PCB A1P for electronic expansion valve is connected T...

Page 309: ...ality is detected according to the temperature detected by the discharge pipe temperature sensor Malfunction Decision Conditions When the discharge pipe temperature rises to an abnormally high level 135 C and above When the discharge pipe temperature rises suddenly 120 C and above for 10 successive minutes Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe...

Page 310: ...erature of discharge pipe by using service checker with actual measurement value of discharge pipe thermistor Refer to 1 Service Checker Check if temperature of discharge pipe by using service checker is the same with actual measurement value of discharge pipe thermistor Discharge pipe thermistor is normal and the temperature detection of the main PCB is also normal Actually the temperature of dis...

Page 311: ...ion of outdoor air thermistor Disconnection of the heat exchanging deicer thermistor Disconnection of the liquid pipe thermistor Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Check the mounting condition of the temperature sensors of the outdoor...

Page 312: ...S unit Method of Malfunction Detection This malfunction is detected by whether or not all coils of the electronic expansion valve have continuity Malfunction Decision Conditions When the power supply turns ON there is no currents pass through the common COM Supposed Causes Connector disconnected from the electronic expansion valve Faulty coil of the electronic expansion valve coil Faulty PCB of th...

Page 313: ... Y3E Electronic expansion valve Y1E Is the connectorfor the electronicexpansionvalve ofthePCB concerned properlyconnected Is the resistance of the electronic expansion valve coil normal See 1 YES YES YES NO NO Properly and securely connect the connector Replace the electronic expansion valve coil concerned Replace the BS unit PCB 1 Procedure for checking the electronic expansion valve for the driv...

Page 314: ...Applicable Models REYQ8P 48P Method of Malfunction Detection Detection of abnormal signal from fan motor Malfunction Decision Conditions In case of detection of abnormal signal at starting fan motor Supposed Causes Abnormal fan motor signal circuit malfunction Broken short circuited or disconnection connector of fan motor connection cable Fan Inverter PCB malfunction A2P ...

Page 315: ...eck if signal wire connector for the corresponding fan motor is normal Check the connector of the fan motor 1 Check iftheresistance ofthefan motor leadwirebetween Vccand UVWand betweenGND andUVW are balanced 1 Check the procedure for fan motor connector 1 Power OFF the fan motor 2 Remove the connector X2A or X4A on the PCB to measure the following resistance value Judgement criteria resistance val...

Page 316: ...ive thermistor connection Defect of outdoor air thermistor R1T Defect of outdoor unit PCB A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connector is connected to X18A of outdoor PCB A1P NO Connect the connector and turn on again Confirm whic...

Page 317: ...nt sensor corresponding to the malfunction code J2 in the monitor mode Refer to P 255 P 256 for how to check Confirmation of malfunction 4 shows as follows Current sensor for constant rate compressor 1 Confirmation of malfunction 4 shows as follows Current sensor for constant rate compressor 2 Explanation for Master unit Slave unit 1 Slave unit 2 System Is the connector for current sensor connecte...

Page 318: ...discharge pipe Defect of outdoor unit PCB A1P Defect of thermistor connection Troubleshooting The alarm indicator is displayed when the fan is being used also Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connector is connected to X29A of outdoor unit PCB A1P N...

Page 319: ...ive connection of thermistor Defective thermistor Defective outdoor unit PCB Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connector is connected to X30A of outdoor PCB A1P NO Connect the connector and turn on again Confirm which thermistor is a...

Page 320: ...stor R8T or R10T for outdoor unit suction pipe Defect of outdoor unit PCB A2P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connector is connected to X11A of outdoor unit PCB A2P NO Connect the connector and turn ...

Page 321: ...rmistor R4T or R12T for outdoor unit heat exchanger Defect of outdoor unit PCB A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connector is connected to X30A of outdoor unit PCB A1P NO Connect the connector and ...

Page 322: ...6T R9T or R14T Faulty outdoor unit PCB Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PCB A1P NO Connect the connector and operate the u...

Page 323: ... R7T or R15T Faulty outdoor unit PCB Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PCB A1P NO Connect the connector and operate the uni...

Page 324: ...lty subcooling heat exchanger gas pipe thermistor R5T or R13T Faulty outdoor unit PCB Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P450 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the connector for subcooling heat exchanger gas pipe thermistorconnected to X30A on outdoor unit PCB A1P NO Co...

Page 325: ...function Detection Malfunction is detected from the pressure detected by the high pressure sensor Malfunction Decision Conditions When the high pressure sensor is short circuit or open circuit Not less than 4 22MPa or 0 01MPa and below Supposed Causes Defect of high pressure sensor system Connection of low pressure sensor with wrong connection Defect of outdoor unit PCB Defective connection of hig...

Page 326: ...ng outdoor unit monitor mode Refer to P 255 P 256 1 Set the high pressure gauge upright 2 Connect the checker for VRV to the gauge IfthePCB pressuredetection normal Makea comparison betweenthechecker pressure dataand the voltage characteristics 2 Reset the operation and then restart the outdoor unit Are the characteristics of the high pressure sensor normal Replace the main PCB Replace the high pr...

Page 327: ...low pressure sensor Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Arethecharacteristicsofthelow pressuresensornormal Make a comparisonbetween the voltagecharacteristics 1 and the gauge pressure NO Replace the low pressure sensor Confirm which high pressure sensor is abnormal using outdoor unit monitor mode Refer to P...

Page 328: ...E37 701_B 317 Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P452 Outdoor unit PCB A1P 5V GND Micro computer A D input 2 Measure DC voltage here X31A 4 3 2 1 Red Black White Low pressure sensor ...

Page 329: ...detected based on the current value during waveform output before starting compressor Malfunction is detected based on the value from current sensor during synchronous operation when starting the unit Malfunction Decision Conditions Overcurrent OCP flows during waveform output Malfunction of current sensor during synchronous operation IPM failure Supposed Causes Inverter PCB A2P z IPM failure z Cu...

Page 330: ...ion broken wire short circuit or ground fault Turn ON the power supply again Does the power supply normally come back ON It is supposed that the malfunction results from external causes other than failures e g exogenous noises or thunder Is the individual system applied to the outdoor unit Multi system Individual system While in monitor mode check whether the system is right hand control PCB 1 or ...

Page 331: ...oller Display L4 Applicable Models REYQ8P 48P Method of Malfunction Detection Fin temperature is detected by the thermistor of the radiation fin Malfunction Decision Conditions When the temperature of the inverter radiation fin increases above 87 C Supposed Causes Actuation of radiation fin thermal Actuates above 87 C Defect of inverter PCB Defect of radiation fin thermistor ...

Page 332: ...heck the outdoor unit concerned The radiation fin of the inverter PCB concerned exceeded a temperature of 87 C Turn OFF the power supply and then make measurement of resistance of the radiation fin thermistor Replace the thermistor Is the thermistor resistance normal Connect and disconnect the connector X111A for the fin thermistor and then properly connect it Does the malfunction recur when the p...

Page 333: ... 701_B Troubleshooting by Indication on the Remote Controller Troubleshooting 322 Inverter PCB for compressor Refer to Thermistor Resistance Temperature Characteristics table on P450 XIIIA EH CONNECTOR WHITE ...

Page 334: ...s REYQ8P 48P Method of Malfunction Detection Malfunction is detected from the current flowing in the power transistor Malfunction Decision Conditions When an excessive current flows in the power transistor Instantaneous overcurrent also causes activation Supposed Causes Defect of compressor coil disconnected defective insulation Compressor start up malfunction mechanical lock Defect of inverter PC...

Page 335: ...essor are normal Insulation resistance of the compressor is 100 kΩ or below Compressor coils are disconnected Check 4 Check if the power transistor is normal Failure occurs again after restarting the unit Power OFF NO NO NO YES NO YES NO NO YES NO YES Open the stop valve Replace compressor lead wires Correct the wiring and connection Replace the inverter compressor Replace the inverter compressor ...

Page 336: ... 48P Method of Malfunction Detection Malfunction is detected from the current flowing in the power transistor Malfunction Decision Conditions When overload in the compressor is detected Inverter secondary current 16 1A 1 19 0A and over continues for 5 seconds 2 16 1A and over continues for 260 seconds Supposed Causes Compressor overload Compressor coil disconnected Defect of inverter PCB Faulty co...

Page 337: ... disconnected Check 4 Check if the power transistor is normal Malfunction code L8 is displayed again Power OFF NO NO NO YES YES NO YES NO Open the stop valve Replace the compressor lead wires Correct the wiring and connection Replace the inverter compressor Replace the inverter compressor Replace the inverter PCB A2P Continue the operation Referring to the information on P384 Check 4 Connect the c...

Page 338: ...ble Models REYQ8P 48P Method of Malfunction Detection Detect the failure based on the signal waveform of the compressor Malfunction Decision Conditions Starting the compressor does not complete Supposed Causes Failure to open the stop valve Defective compressor Wiring connection error to the compressor Large pressure difference before starting the compressor Defective inverter PCB ...

Page 339: ...it Multi system While in monitor mode check the outdoor unit concerned Check if it is the first time to start after installation Check if a right amount of refrigerant is charged Charge a right amount of refrigerant Check if the stop valve is open Check if the insulation resistanceofthecompressor is more than 100kΩ NO YES Refrigerant is sleeping The unit is out of power supply for more than 6 hour...

Page 340: ...ncel the sleeping state of refrigerant Referring to the information on P384 Check 4 Refrigerant is sleeping The unit is out of power supply for more than 6 hours Check if the insulation resistance of the compressor is 100kΩ or over Broken inside the compressor YES NO YES NO YES Replace the inverter compressor Replace the inverter compressor Replace the compressor inverter PCB Recheck the compresso...

Page 341: ...mmunication state between inverter PCB and control PCB by micro computer Malfunction Decision Conditions When the correct communication is not conducted in certain period Supposed Causes Malfunction of connection between the inverter PCB and outdoor main PCB Defect of outdoor main PCB transmission section Defect of inverter PCB Defect of noise filter Faulty fan inverter Incorrect type of inverter ...

Page 342: ...C0511 4 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Was the PCB A1P replaced with a spare PCB YES Make correct model setting For setting procedure refer to information on P186 Does the model setting of the spare PCB match the system Are the connectors of the inverter PCB main PCB and sub PCB all securely connected Is the type of t...

Page 343: ...he main PCB A1P is blinking The micro computer normal monitor green of the main PCB A4P is blinking The LC malfunction recurs NO YES NO NO NO YES YES YES NO Takecountermeasures following the displayed malfunction code Not the LC malfunction Check the malfunction code again Replace the inverter PCB A4P If the replaced PCB has significant damage thecompressorisprobably get faulty In this case carry ...

Page 344: ...he inverter Consequently the increased ripple is detected Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while the unit operation is continued P1 will be displayed by pressing the inspection button When the amplitude of the ripple exceeding a certain value is detected for consecutive 4 ...

Page 345: ... between 3 phases L1 L2 L2 L3 L3 L1 for about one continuous week When voltage monitoring is possible Open phase NO YES Fix power supply voltage imbalance Part or wiring defect After turning the power supply OFF check and repair the main circuit wiring or parts 1 Loose or disconnected wiring between power supply and inverter 2 K2 contact disposition fusion or contact is poor 3 Loose or disconnecte...

Page 346: ...tion button Supposed Causes Defect of radiator radiation fin temperature sensor Defect of inverter PCB Faulty inverter compressor Faulty fan motor Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO Replace the inverter PCB Measure resistance value of the radiation fin thermistor Is the thermistor resistance value norma...

Page 347: ... 701_B Troubleshooting by Indication on the Remote Controller Troubleshooting 336 Inverter PCB for compressor Refer to Thermistor Resistance Temperature Characteristics table on P450 XIIIA EH CONNECTOR WHITE ...

Page 348: ...e Controller Display PJ Applicable Models REYQ8P 48P Method of Malfunction Detection This malfunction is detected according to communications with the inverter Malfunction Decision Conditions Make judgment according to communication data on whether or not the type of the inverter PCB is correct Supposed Causes Faulty or no field setting after replacing main PCB Mismatching of type of PCB ...

Page 349: ... power switch before connect or disconnect connector or parts damage may be occurred NO Make correct setting of DIP switch For setting procedure refer to information on page 182 Was the PCB A1P replaced with a spare PCB NO Is the model setting of the spare PCB correct Is the type of the compressor inverter PCB correct 1 Is the type of the fan inverter PCB correct 2 Does the Preparation indication ...

Page 350: ...at exchanger Malfunction Decision Conditions In cooling mode Low pressure becomes 0 1MPa or below In heating mode The degree of superheat of suction gas becomes 20 degrees and over SH Ts1 Te Ts1 Suction pipe temperature detected by thermistor Te Saturated temperature corresponding to low pressure Malfunction is not determined The unit continues the operation Supposed Causes Refrigerant shortage or...

Page 351: ...ure gauge in operation 2 Compare the actual measurement value by pressure sensor with the value by the pressure gauge To gain actual measurement value by pressure sensor measure the voltage at the connector between 2 3 and then convert the value into pressure referring to P452 In heating mode Reset the operation using the remote controller then restart NO Replace the thermistor Checkif the tempera...

Page 352: ...outdoor PCB A1P Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Fix the open phase Requires inspection of field power supply section There is an open phase at the power supply terminal section X1M of the outdoor unit NO Operation is normal if one place of power supply line phase is replaced NO YES YES Reverse phase Cou...

Page 353: ...cuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the voltage aforementioned is not less than 780V or not more than 320V or when the current limiting voltage does not reach 200V or more or exceeds 740V Supposed Causes Power supply insufficient Instantaneous power failure Open phase Defect of inverter PCB Defect of outdoor control PCB Defect of main ...

Page 354: ...ce Theinsulationresistance islow i e notmorethan 1MΩ Check the inverter power transistor Has the power transistor got faulty Check the fan driver power transistor Has the power transistor got faulty A NO NO YES YES YES NO NO NO YES NO YES NO YES NO Onsite causes Correct the unbalanced loads to eliminate the unbalanced state Unbalanced voltage will cause extremely unbalanced current thus impairing ...

Page 355: ... or A8P X1A X403A A4P or A7P A5P or A8P P1 P2 Reactor terminal L1R A5P or A8P P3 N3 P1 N1 A6P A6P P2 N2 P1 N1 A7P Single Has the inverter PCB caused damage Has the fan driver caused damage Turn ON the power supply Stop standby before the fan rotates Stop standby when the compressor starts up Power ON The U2 malfunction recurs NO YES NO YES NO YES NO YES NO Single A6P A7P or A9P Multi A5P A7P Repla...

Page 356: ...ed Causes Check operation is not executed Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Press and hold BS4 on the outdoor master PCB for 5 seconds or more or turn ON the local setting mode 2 3 to conduct a check operation Has the check operation performed on outdoor unit PCB NO YES Performs the check operation again ...

Page 357: ...on Detection Check if the transmission between indoor unit and outdoor unit is correctly executed using micro computer Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Indoor to outdoor outdoor to outdoor transmission wiring F1 F2 disconnection short circuit or wrong wiring Outdoor unit power supply is OFF System address doe...

Page 358: ...kifthenormalcondition monitorforthemicro computer HAP ontheoutdoorunitPCB blinks Check if the LED in preparation mode H2P on the outdoor unit PCB blink Lights do not go out for 12 minutes or more Check if the indoor outdoor outdoor outdoor connecting wires are normal Checkiftheoperationisnormal with1circuitafteroutdoor outdoorconnectingwiresare removed Check if the indoor outdoor outdoor outdoorco...

Page 359: ... previous page YES In Confirmation of malfunction 4 LED lamp indicates as follows Start operation of all the indoor units Check if all the units indicate U9 Check if more than 2 minutes passed since U9 was indicated YES NO NO Make a diagnosis again based on the indication in 2 minutes and over The indoor units PCB indicating U9 are normal Check the indoor units in the other circuits to diagnose fa...

Page 360: ... remote controllers Defect of indoor unit PCB Defect of remote controller PCB Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Set one remote controller to SUB turn the power supply off once and then back on Using 2 remote controllers control YES SS1 of both remote controllers...

Page 361: ...nction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error in connecting wires between outdoor unit and external control adaptor for outdoor unit Connection error in connecting wires across outdoor units Setting error in switching cooling heating Integrated address setting error for cooling heating function unit external c...

Page 362: ...Diagnosis Flow 3 Abnormal transmission between the master unit and the slave unit 1 Go on to the Diagnosis Flow 4 Abnormal transmission between the master unit and the slave unit 2 Go on to the Diagnosis Flow 5 Multi connection REYQ units Go on to the Diagnosis Flow 6 Erroneous manual address settings of the slave units 1 and 2 Go on to the Diagnosis Flow 7 Connection of four or more outdoor units...

Page 363: ... malfunction 4 Diagnosis Flow 1 Check if the normal condition monitor LED for the outdoor unit PCB blinks Check if power is supplied to the outdoor units Check if the normal condition monitor LED for the externalcontroladaptor for outdoor unit blinks Check if the power supply wire for the external control adaptor for outdoorunit is connected to 5V supply line YES NO NO NO YES YES NO NO YES YES Sup...

Page 364: ...door transmission are duplicated Set the address again Replace the main PCB of the outdoor unit Supply the power to the outdoor unit Replace the main PCB of the outdoor unit Connect the power supply wire for the external control adaptor for outdoor unit to 5V supply line Check if the outdoor unit is powered on Check if the power supply wire for the external control adaptor for outdoor unit is conn...

Page 365: ...orisabouttobe disconnected NO YES Replace the outdoor unit main PCB of the SLAVE 1 Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 4 Correct the connecting wires and then reset the power supply Checktheconnectionstatusof connectingwiresofSLAVE2with MASTER Checkifthewiringis disconnectedorisabouttobe disconnected NO YES Replace the outdoor unit main PCB of the SLAVE 2 Con...

Page 366: ... then reset the power supply In the connection status of the outdoor multi check if more than 4 outdoor units are connected NO Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 8 Correct the connecting wires of the outdoor multi and then reset the power supply Checktheconnectionstatusofthe connectingwiresofoutdoormulti Checkifthewiringhasanyconnection errororbroken orisabo...

Page 367: ...on does not continue for specified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Set SS1 to MAIN the power supply off once and then back on YES Using 2 re...

Page 368: ...mission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PCB of indoor unit in other system Improper connection of transmission wiring between indoor and outdoor unit Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Continue operation YES Turn on all in...

Page 369: ...of refrigerant between indoor and outdoor units The number of indoor units is out of the allowable range Incorrect signals are transmitted among the indoor unit BS unit and outdoor unit Malfunction Decision Conditions The malfunction decision is made as soon as either of the abnormalities aforementioned is detected Supposed Causes Excess of connected indoor units Defect of outdoor unit PCB A1P Mis...

Page 370: ...tion of malfunction 3 Confirmation of malfunction 4 Confirmation of malfunction 3 Confirmation of malfunction 4 To Diagnosis Flow 2 Connection of erroneous models of indoor units To Diagnosis Flow 3 Faulty combination of outdoor units To Diagnosis Flow 4 Faulty wiring in units dedicated to multi connections To Diagnosis Flow 5 Connection of erroneous models of BS units To Diagnosis Flow 6 Faulty w...

Page 371: ...rmation of malfunction 4 YES NO YES NO Diagnosis Flow 1 Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 2 The number of indoor units connected to the same refrigerant circuit system should not be more than 64 units The number of indoor units exceeds the standard Check the connection to correct Check if the refrigerant type of the outdoor unit corresponds to that of the i...

Page 372: ...arts Is a correct spare PCB procured Check if the spare PCB setting is correct Check if the unit isnotconnected to outdoor units of different models Check the model of the outdoor unit Replace it with the correct spare PCB Correct the setting to reset the power Replace the spare PCB NO YES YES NO Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 4 Is a single unit of model...

Page 373: ...YES NO Diagnosis Flow 5 Is the model BSVQ P connected YES NO Replace the outdoor unit PCB as shown below With individual systems replace the control PCB 1 A1P With multi systems replace the main PCB A1P Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 6 Is the wiring between the outdoor unit and the BS unit correct Correct the wiring Replace the outdoor unit PCB as shown ...

Page 374: ... Correct the connection wiring Confirmation of malfunction 3 Confirmation of malfunction 4 YES NO Diagnosis Flow 7 Is the wiring between the BS units correct NO YES Replace the BS unit PCB concerned Confirmation of malfunction 3 Confirmation of malfunction 4 Diagnosis Flow 8 Is the connection wiring between the indoor unit and the BS unit correct Correct the connection wiring Replace the indoor un...

Page 375: ...t detects the same address as that of its own on any other indoor unit Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The centralized addr...

Page 376: ...Detection Micro computer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Malfunction of transmission between optional controllers for centralized control and indoor unit Connector for setting master controller is disconnected or disconnection of...

Page 377: ...entralized control group No been made with the indoor unit on which the UE occurred Was the centralized control group No for indoor unit changed Can the setting of centralized control group No be made ForVRV systems can the setting of centralized control group No be made in one and the same refrigerant system Make correct setting of the centralized control group No Check outdoor units to which the...

Page 378: ...ter unit centralized controller and then check the voltage between the transmission terminals F1 and F2 of the master unit transmission equipment using a multiple meter Is the voltage between the terminals F1 and F2 in the range of 15 2 to 17 6 VDC Correct the connection of the connector Replace the central equipment Centralized controller Normal It is supposed that the malfunction results from ex...

Page 379: ...check operation Defect of indoor unit PCB Stop valve is left in closed Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour Caution Be sure to turn off power switch before connect or disconnect connector or ...

Page 380: ...ndoor unit models REYQ8P 48P Method of Malfunction Detection Detect an indoor unit with no address setting Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units Defect of indoor unit PCB Defect of outdoor unit main PCB A1...

Page 381: ...m status and then check whether or not the system is normal Does a UH malfunction occur for all indoor units in the system Does a malfunction occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor units After fixing the incorrect wiring push and hold the RESET button on the master outdoor unit PCB for 5 seconds The unit will not run for up to 12 minu...

Page 382: ...ted at the same time Supposed Causes Defect of centralized remote controller PCB Defect of intelligent Touch Controller PCB Defect of Schedule timer PCB Troubleshooting Replace the centralized remote controller Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the M1 displayed again Replace the central equipment Turn ON the power sup...

Page 383: ...lizedcontroller Thecentral equipment was connected once and then disconnected or additional centralized controller was installed Reset the power supplies of every centralized controller YES NO YES NO YES YES NO NO YES Normal Abnormal Have power supplies to every centralized controller been turned ON Is the display of LCD OK Check 7 Check if the unit indicating A8 has no broken of wiring 2 Nothingi...

Page 384: ... of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master controller are present When the remote control adaptor is present Supposed Causes Improper combination of optional controllers for centralized control More than one mast...

Page 385: ... from external factors e g noises from other equipment Centralized controller Normal 1 Referring to the information on P 388 Not available for combined use of the schedule timer and the Interface for BACnet Dismount either of them and then reset power supplies of every centralized controller Not available for combined use of the schedule timer and the interface LonWorks Dismount either of them and...

Page 386: ... of the centralized controller correct NO NO YES YES YES NO NO YES Be sure to refer to the Master Slave setting table Check 9 Is the Master Slave settingofthecentralized controller correct 1 Was the centralized controllerconnectedonce and then disconnected or was additional centralized controller installed Correct the setting of the combination of master and slave units and then reset the power su...

Page 387: ... indoor unit models Unified ON OFF controller Method of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions Supposed Causes Malfunction of transmission between optional central controller and indoor unit Connector for setting master controller is disconnected Defect of unified ON OFF controller PCB Defect of indoor unit PCB Malfuncti...

Page 388: ...ncorrectly YES NO Is transmission with all indoor units malfunctioning YES NO Is the transmission wiring with the master controller disconnected or wired incorrectly YES NO NO YES Is the master controller s connector for setting master controller disconnected Is the group No of malfunctioning indoor units set YES NO Diagnose the cause with the air conditioner s failure diagnosis manual Reset power...

Page 389: ...centralized controller which was connected once shows no response The control ranges are overlapped When multiple master central controller are present When the schedule timer is set to individual use mode other central controller is present When the wiring adaptor for electrical appendices is present Supposed Causes Address duplication of optional controllers for centralized control Improper comb...

Page 390: ... controller or schedule timer connected Are two or more unified ON OFF controllers connected YES NO YES YES YES NO NO NO NO NO YES YES A Is the centralized remote controller or schedule timer displaying a malfunction Is the setting of the unified ON OFF controller s switch for setting each address duplicated NO NO YES YES Reset power supply simultaneously for all optional controllers for centraliz...

Page 391: ...l simultaneously Schedule timer and parallel interface cannot be used in combination Disconnect either the schedule timer or parallel interface and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the schedule timer s individual combined connector and reset the power supply for all optional controllers for centralized control simultaneously Arra...

Page 392: ...up No is not set for indoor unit Improper control range setting switch Improper wiring of transmission wiring Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the central control address group No set for the indoor unit Is the control range setting switch set correctly Is the transmission wiring disconnected or wired...

Page 393: ... Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected Furthermore to use a multiple meter for measurement connect the probe of negative pole to Vcc and that of positive pole to GND Red U ...

Page 394: ...PCB Check if coil resistance and insulation are normal Check if coil resistance and insulation are normal Check if the voltage property is normal Check if the connector is connected properly Check if the thermistor resistance property is normal Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor Check if the piping temperature connected ...

Page 395: ... value mode in the range of multiplying 1kΩ To use digital tester Measurement is executed in the diode check mode No Point of Measurement Judgement Criteria Remarks No Point of Measurement Judgement Criteria Remarks 1 P2 U 2 15kΩ 1 P2 U 1 2V and over Due to condenser charge and so on resistance measurement may require some time 2 P2 V 2 P2 V 3 P2 W 3 P2 W 4 U P2 15kΩ and above including Due to con...

Page 396: ...hort circuit High outdoor air temperature Short circuit High outdoor air temperature Check to be sure the stop valve is open Conduct visual checks for pipe conditions Is there any temperature difference caused before and after the filter or branch pipe Are the coil resistance and insulation normal Are the electrical characteristics normal Is the pressure value checked with the Service Checker corr...

Page 397: ...rresponding to the measurement of the pressure sensor Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor Are the electrical characteristics normal Are the coil resistance and insulation normal Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor Are the coil resistance and insulati...

Page 398: ...ntinuity 2 Procedure for checking indoor outdoor unit transmission wiring for broken wires for checking the indoor outdoor unit transmission wiring of the Outdoor Unit C for broken wires Turn OFF the power supply to all equipment short circuit between the indoor outdoor unit terminal parts F1 and F2 in the Outdoor Unit C and then conduct continuity checks between the transmission wirings F1 and F2...

Page 399: ... available for combined use 2 The intelligent Touch Controller centralized remote controller and the unified ON OFF controller have been set to Provided with the master unit central setting connector at the factory The schedule timer has been set to Not provided with the master unit central setting connector at the factory which is attached to the casing of the main unit Pattern Centralized contro...

Page 400: ...ing to do with those described in the list of Setting of master unit central setting connector 1 2 3 4 Pattern 1 00 4 15 Master Slave 5 00 8 15 Master Slave 1 00 4 15 Master Slave 5 00 8 15 Master Slave CRC Master CRC Master CRC Slave CRC Slave CRC Master CRC Slave intelligent Touch Controller Master intelligent Touch Controller Slave CRC Master intelligent Touch Controller Slave intelligent Touch...

Page 401: ...oor unit electronic expansion valve 2 Superheated degree control in heating operation is exercised with the outdoor unit electronic expansion valve EV1 3 Guideline of superheated degree to judge as wet operation 1 Suction gas superheated degree Not more than 3 C 2 Discharge gas superheated degree Not more than 15 C except immediately after compressor starts up or is running under drooping control ...

Page 402: ...ecomes lower Cooling High pressure drooping control Frequency comes to the minimum level High pressure gradually rises with increase in frequency High pressure Low pressure Frequency Supercooled degree becomes higher Liquid connection pipe temperature lowers Low pressure rises due to reduced compressor output Low pressure is maintained at a constant level To maintain low pressure frequency increas...

Page 403: ...d for high pressure protection under cooling control at low outdoor temperature i e the fan is hunting at high pressure Frequency comes to the minimum level High pressure Low pressure Frequency Highpressuredropswithdecrease incompressorcapacity Low pressure is maintained at a constant level Low pressure rises as the opening degree of the indoor unit electronic expansion valve becomes larger Freque...

Page 404: ... of 100 7kPa or less for a period of one hour or more and then check to be sure that the vacuum gauge reading does not rise If the reading rises moisture may have remained in the system or refrigerant leakage may have been caused Refrigerant charge Purge air from the manifold gauge connection hoses and then charge a necessary quantity of refrigerant Special vacuuming and dehydration In case moistu...

Page 405: ...d sealing or faulty compressor Excessive oil or refrigerant Faulty inverter PCB E5 Inverter compressor lock The compressor is in the locked status does not rotate Faulty compressor L4 Radiator fin temperature rise The radiator fin temperature reaches 87 C or more while in operation Malfunction of fan Running in overload for an extended period of time Faulty inverter PCB U2 Power supply voltage err...

Page 406: ...rrent of 19 0A or more continues for a period of 5 consecutive seconds 2 An overcurrent of 16 1A or more continues for a period of 260 consecutive seconds Compressor L9 E5 PCB mismatching When incorrect inverter PCB is connected Radiator fin temperature rise When the radiator fin temperature reached 93 C or more Faulty fin thermistor When the fin thermistor resistor detects an open circuit 30 C or...

Page 407: ...utdoor Unit 431 3 2 Indoor Side 435 4 Option List 440 4 1 Option List of Controllers 440 4 2 Option Lists Outdoor Unit 442 5 Piping Installation Point 443 5 1 Piping Installation Point 443 5 2 The Example of a Wrong Pattern 444 6 Example of connection 446 7 Thermistor Resistance Temperature Characteristics 450 8 Pressure Sensor 452 9 Method of Checking the Inverter s Power Transistors and Diode Mo...

Page 408: ... STD CAPILLARY TUBE FILTER FILTER ELECTRONIC EXPANSION VALVE FILTER SERVICE PORT RIGHT STRAINER PRESSURE REGULATING VALVE CHECK VALVE TYPE ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION VALVE FILTER SV CHECK VALVE SOLENOID VALVE FOUR WAY VALVE HEAT EXCHANGER CAPILLARY TUBE FILTER S1NPH HIGH PRESSURE SENSOR CHECK VALVE FILTER OIL SEPARATOR HPS HIGH PRESSURE SWITCH SOLENOID VALVE COMPRESSOR INV FIL...

Page 409: ... FILTER FILTER ELECTRONIC EXPANSION VALVE FILTER SERVICE PORT RIGHT STRAINER PRESSURE REGULATING VALVE CHECK VALVE TYPE ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION VALVE FILTER SV CHECK VALVE SOLENOID VALVE FOUR WAY VALVE HEAT EXCHANGER CAPILLARY TUBE FILTER S1NPH HIGH PRESSURE SENSOR CHECK VALVE FILTER OIL SEPARATOR HPS HIGH PRESSURE SWITCH SOLENOID VALVE COMPRESSOR INV FILTER CHECK VALVE SV ...

Page 410: ...LLARY TUBE SUCTION GAS PIPE FILTER ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION VALVE CHECK VALVE SOLENOID VALVE FILTER CAPILLARY TUBE FILTER FOUR WAY VALVE HEAT EXCHANGER SOLENOID VALVE CHECK VALVE SOLENOID VALVE SV SV SV FILTER SOLENOID VALVE FILTER FILTER PRESSURE REGULATING VALVE ABSOLUTE PRESSURE TYPE STRAINER REFRIGERANT REGULATOR SOLENOID VALVE CHECK VALVE SOLENOID VALVE CAPILLARY TUBE S...

Page 411: ... EXPANSION VALVE ELECTRONIC EXPANSION VALVE CHECK VALVE SOLENOID VALVE FILTER CAPILLARY TUBE FILTER FOUR WAY VALVE HEAT EXCHANGER SOLENOID VALVE CHECK VALVE SOLENOID VALVE SV SV SV FILTER SOLENOID VALVE FILTER FILTER PRESSURE REGULATING VALVE ABSOLUTE PRESSURE TYPE STRAINER REFRIGERANT REGULATOR SOLENOID VALVE CHECK VALVE SOLENOID VALVE CAPILLARY TUBE SV SV SV HIGH PRESSURE SWITCH OIL SEPARATOR CH...

Page 412: ...ION VALVE CHECK VALVE SOLENOID VALVE FILTER CAPILLARY TUBE FILTER FOUR WAY VALVE HEAT EXCHANGER SOLENOID VALVE CHECK VALVE SOLENOID VALVE SV SV SV FILTER SOLENOID VALVE FILTER FILTER PRESSURE REGULATING VALVE ABSOLUTE PRESSURE TYPE STRAINER REFRIGERANT REGULATOR SOLENOID VALVE CAPILLARY TUBE SV SV HIGH PRESSURE SWITCH OIL SEPARATOR CHECK VALVE FILTER FILTER COMPRESSOR INV S2PH S2NPL LOW PRESSURE S...

Page 413: ...HANGER FAN M FILTER ELECTRONICEXPANSION VALVE FILTER LIQUID PIPE CONNECTION PORT GAS PIPE CONNECTION PORT REFRIGERANT FLOW COOLING HEATING REFRIGERANT PIPE CONNECTION PORT DIAMETERS MODEL FXFQ20 25 32 40 50P FXFQ63 80 100 125P GAS LIQUID φ12 70 φ15 90 φ6 35 φ9 52 3TW28835 1 ...

Page 414: ...n Th3 Th2 Th1 Gas pipe connection port flare connection Liquid pipe connection port flare connection Filter Filter Electronic expansion valve Th1 Thermistor for suction air temp Th2 Thermistor for liquid line temp Th3 Thermistor for gas line temp 4D040157 mm Model Gas Liquid FXZQ20M 25M 32M 40M 50M φ12 7 φ6 4 ...

Page 415: ...175 1C C 3TW31185 1 HEAT EXCHANGER M FAN FILTER FILTER ELECTRONICEXPANSION VALVE LIQUID PIPE CONNECTION PORT GAS PIPE CONNECTION PORT REFRIGERANT FLOW COOLING HEATING Model Gas Liquid FXSQ20 25 32 40 50 φ12 70 φ6 35 FXSQ63 80 100 125 φ15 90 φ9 52 FXCQ20 25 32 40 50 φ12 70 φ6 35 FXCQ63 80 125 φ15 90 φ9 52 FXDQ20 25 φ12 70 φ6 35 ...

Page 416: ...e Y1E Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 2 Suction air temperature thermistor R1T Used for thermostat control 3 Liquid pipe thermistor R2T Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 4 Gas pipe thermistor R3T Used for gas superheated d...

Page 417: ...quid side Electronic expansion valve Filter Filter Fan Indoor heat exchanger 4D060927 mm Model Gas Liquid FXDQ20NB PB 25NB PB 32NB PB 40NB 50NBVE φ12 7 φ6 4 FXDQ63NBVE φ15 9 φ9 5 Heat exchanger Fan M Filter Filter Electronic expansion valve Gas pipe connection port Liquid pipe connection port 4D034245D mm Model Gas Liquid FXMQ20P 25P 32P 40P 50PVE φ12 7 φ6 4 FXMQ63P 80P 100P 125P 140PVE φ15 9 φ9 5...

Page 418: ...s pipe connection port Electronic expansion valve EVSC Capillary tube Electronic expansion valve EVHS Electronic expansion valve EVH Electronic expansion valve EVLS Electronic expansion valve EVL Liquid pipe connection port Dual gas pipe connection port Suction gas pipe connection port ...

Page 419: ...OTOR COMPRESSOR R11T THERMISTOR HEAT EXC GAS 2 Y4E ELECTRONIC EXPANSION VALVE CHARGE A2P PRINTED CIRCUIT BOARD SUB 1 H1P 8P PILOT LAMP SERVICE MONITOR ORANGE H2P PREPARE TEST FLICKERING MALFUNCTION DETECTION LIGHT UP M1F M2F MOTOR FAN R12T THERMISTOR HEAT EXC DEICER 2 Y5E ELECTRONIC EXPANSION VALVE SUBCOOLING 2 A3P PRINTED CIRCUIT BOARD SUB 2 PS SWITCHING POWER SUPPLY A1P A3P A5P R13T THERMISTOR S...

Page 420: ...TE K4 MAGNETIC CONTACTOR M1C A4P M2C A7P M1F M2F MOTOR FAN R11T THERMISTOR HEAT EXC GAS 2 Y4E ELECTRONIC EXPANSION VALVE CHARGE H1P 8P PILOT LAMP SERVICE MONITOR ORANGE PS SWITCHING POWER SUPPLY A1P A3P A5P A8P R12T THERMISTOR HEAT EXC DEICER 2 Y5E ELECTRONIC EXPANSION VALVE SUBCOOLING 2 H2P PREPARE TEST FLICKERING Q1RP PHASE REVERSAL DETECT CIRCUIT A1P A3P R13T THERMISTOR SUBCOOL HEAT EXC GAS 2 Y...

Page 421: ...TOR K5R MAGNETIC RELAY Y3S A1P R6T THERMISTOR SUB COOL HEAT EXC LIQUID Y3S SOLENOID VALVE 4 WAY VALVE HEAT EXC C63 C66 CAPACITOR K5R MAGNETIC RELAY FOR OPTION A2P R7T THERMISTOR HEAT EXC LIQUID Y4S SOLENOID VALVE RMTL E1HC CRANKCASE HEATER K6R MAGNETIC RELAY Y7S R8T THERMISTOR SUCTION Y5S SOLENOID VALVE HOT GAS F1U F2U FUSE T 3 15A 250V A1P K7R MAGNETIC RELAY E1HC R9T THERMISTOR LIQUID Y6S SOLENOI...

Page 422: ...D MAIN K3 MAGNETIC RELAY R50 R59 RESISTOR X1A X2A CONNECTOR M1F A2P PRINTED CIRCUIT BOARD SUB K4 MAGNETIC CONTACTOR M1C R90 RESISTOR CURRENT SENSOR X3A CONNECTOR Y1E A3P PRINTED CIRCUIT BOARD NOISE FILTER K2M MAGNETIC CONTACTOR M2C R95 RESISTOR CURRENT LIMITING X1M TERMINAL STRIP POWER SUPPLY A4P PRINTED CIRCUIT BOARD INV K1R MAGNETIC RELAY K2M A1P R1T THERMISTOR AIR A1P X1M TERMINAL STRIP CONTROL...

Page 423: ...T SHORT CIRCUIT THE PROTECTION DEVICE S1 3PH 8 COLORS BLK BLACK RED RED BLU BLUE WHT WHITE GRN GREEN A1P PRINTED CIRCUIT BOARD MAIN K3 MAGNETIC RELAY R50 R59 RESISTOR X1A 4A CONNECTOR M1F M2F A2P PRINTED CIRCUIT BOARD SUB K4 MAGNETIC CONTACTOR M1C R90 RESISTOR CURRENT SENSOR X5A CONNECTOR Y1E A3P PRINTED CIRCUIT BOARD NOISE FILTER K2M K3M MAGNETIC CONTACTOR M2C M3C R95 RESISTOR CURRENT LIMITING X1...

Page 424: ...ources in an integrated manner because this system consists of the equipment utilizing the multiple power sources 10 If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in reversed phase may break the compressor and other parts POWER SUPPLY ...

Page 425: ...ource is connected in series between the units SWITCH FUSE POWER SUPPLY L N MAIN SWITCH L1 L2 L3 N SWITCH FUSE L1 L2 L3 N UNIT 1 OUTDOOR UNITS 2 WIRES CABLE TRANSMISSION LINE UNIT 2 POWER SUPPLY MAIN SWITCH L1L2 L3 N SWITCH FUSE POWER SUPPLY MAIN SWITCH L N L1 L2 L3 N OUTDOOR UNITS UNIT 1 UNIT 2 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE SWITCH FUSE 2 WIRES CABLE POWER LINE L ...

Page 426: ...CH FUSE L1 L2 L3 N POWER SUPPLY MAIN SWITCH L N SWITCH FUSE L1 L2 L3 N SWITCH FUSE L1 L2 L3 N UNIT 1 OUTDOOR UNITS 2 WIRES CABLE TRANSMISSION LINE UNIT 2 2 WIRES CABLE TRANSMISSION LINE UNIT 3 POWER SUPPLY MAIN SWITCH L1L2 L3 N SWITCH FUSE L1 L2 L3 N POWER SUPPLY MAIN SWITCH L N 2 WIRES CABLE TRANSMISSION LINE UNIT 1 OUTDOOR UNITS 2 WIRES CABLE TRANSMISSION LINE UNIT 2 2 WIRES CABLE TRANSMISSION L...

Page 427: ... Thermistor air H4P Light emitting diode defrost orange Terminal Connector Connector Field wiring Colors RED Red PRP Purple ORG Orange Connector BLK Black GRY Gray GRN Green WHT White Blu Blue YLW Yellow PNK Pink NOTES 1 In case of using central remote control connect it to the unit in accordance with the attached installation manual 2 X24A X33A X35A en X38A are connected when the optional accesso...

Page 428: ... SET KPR MAGNETIC RELAY M1P R1T THERMISTOR AIR M1F MOTOR INDOOR FAN SS1 SELECTOR SWITCH MAIN SUB CONNECTOR FOR OPTIONAL PARTS M1P MOTOR DRAIN PUMP WIRELESS REMOTE CONTROLLER RECEIVER DISPLAY UNIT X16A CONNECTOR ADAPTOR FOR WIRE M1S MOTOR SWING FLAP Q1DI FIELD EARTH LEAK DETECTOR MAX 300mA A3P PRINTED CIRCUIT BOARD X18A CONNECTOR ON OFF WIRING ADAPTOR FOR ELECTRICAL APPENDICES A4P PRINTED CIRCUIT B...

Page 429: ... CIRCUIT BOARD RyA MAGNETIC RELAY M1S H3P LIGHT EMITTING DIODE FILTER SIGN RED C1R CAPACITOR M1F RyF1 3 MAGNETIC RELAY M1F H4P LIGHT EMITTING DIODE DEFROST ORANGE F1T THERMAL FUSE 152 C M1F EMBEDDED RyP MAGNETIC RELAY M1P SS1 SELECTOR SWITCH MAIN SUB F1U FUSE 250V 5A T1R TRANSFORMER 220 240V 22V SS2 SELECTOR SWITCH WIRELESS ADDRESS SET F2U FIELD FUSE X1M TERMINAL STRIP POWER CONNECTOR FOR OPTIONAL...

Page 430: ... CIRCUIT BOARD RyA MAGNETIC RELAY M1S H3P LIGHT EMITTING DIODE FILTER SIGN RED C1R CAPACITOR M1F RyF1 3 MAGNETIC RELAY M1F H4P LIGHT EMITTING DIODE DEFROST ORANGE F1T THERMAL FUSE 152 C M1F EMBEDDED RyP MAGNETIC RELAY M1P SS1 SELECTOR SWITCH MAIN SUB F1U FUSE 250V 5A T1R TRANSFORMER 220 240V 22V SS2 SELECTOR SWITCH WIRELESS ADDRESS SET F2U FIELD FUSE X1M TERMINAL STRIP POWER CONNECTOR FOR OPTIONAL...

Page 431: ...NCE WITH THE ATTACHED INSTRUCTION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE HIGH E S P OPERATION CHANGE OVER THE WIRING CONNECTION FROM X2A TO X3A 6 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED...

Page 432: ...nnecting 3 When connecting the input wires from outside forced off or on off control operation can be selected by remote control In details refer to the installation manual attached to the unit BLK Black BUL Blue GRY Gray GRN Green Colors ORG Orange PNK Pink PRP Purple RED Red WHT White YLW Yellow 3D060547 Field wiring A1P Printed circuit board R1T Thermistor air Z1C Z2C Noise filter ferrite core ...

Page 433: ...0V 22V RyC RyF MAGNETIC RELAY CONNECTOR FOR OPTIONAL PARTS F1U FUSE 250V 10A RyH MAGNETIC RELAY J1EH X16A CONNECTOR WIRING ADAPTOR F2U FIELD FUSE X1M TERMINAL STRIP POWER F1U F2U FUSE 250V 5A X18A CONNECTOR WIRING ADAPTOR FOR ELECTRICAL APPENDICES HAP LIGHT EMITTING DIODE SERVICE MONITOR GREEN X2M TERMINAL STRIP CONTROL X1A X2A CONNECTOR WIRING ADAPTOR Y1E ELECTRONIC EXPANSION VALVE M1F MOTOR FAN ...

Page 434: ... from outside forced off or on off operation can be selected by the remote control See installation manual for more details Field wiring Connector Wire clamp Protective earth screw L Live N Neutral Colors RED Red BLK Black WHT White YLW Yellow ORG Orange BRN Brown GRY Gray BLU Blue PNK Pink GRN Green Indoor unit PS Switching power supply Y1E Electronic expansion valve A1P Printed circuit board Q1D...

Page 435: ... 3 MS 3 V2R V1R 3 A 5 BLU BRN A2P X10A X35A P 1 R2 GRN ORG ORG V1R HAP P PNK WHT Z PS PS GRY HAP X33A X2A 1 X8A X2M X1M C 220 240V 50Hz 220V 60Hz FOR FXMQ20 25 32 40PVE TO X1M TO X70A A1P FOR FXMQ50 63 80 100 125 140PVE INPUT FROM OUTSIDE NOTE 3 TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER NOTE 2 THERMISTOR SUCTION AIR THERMISTOR LIQUID THERMISTOR GAS THERMISTOR DISCHARGE AIR THERMISTOR NTC CURRE...

Page 436: ...SING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE INSTALLING THE DRAIN PUMP REMOVE THE SHORT CIRCUIT CONNECTOR OF X8A AND EXECUTE THE ADDITIONAL WIRIN...

Page 437: ...NG THE DRAIN PUMP REMOVE THE SHORT CIRCUIT CONNECTOR OF X8A AND EXECUTE THE ADDITIONAL WIRING FOR FLOAT SWITCH AND DRAIN PUMP 7 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED 8 USE COPPER CONDUCTORS ONLY INDOOR UNIT H3P LIGHT EMITTING DIODE FILTER SIGN RED A1P PRINTED CIRCUIT BOARD C1R CAPACITOR M1F H4P LIGHT EMITTING DIODE DEFROST ORANGE F1U FUSE B 5A ...

Page 438: ...ON RED SELECTOR SWITCH MAIN SUB CONNECTOR ADAPTOR FOR MULTI TENANT R1T SS1 X15A X24A X35A X38A NOTES 1 TERMINAL CONNECTOR FIELD WIRING CONNECTOR 2 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 3 SYMBOLS SHOWS AS FOLLOWS RED RED WHT WHITE GRN GREEN PNK PINK YLW YELLOW BLK BLACK ORG ORANGE BLU BLUE 4 SHOWS SHORT CIRCUIT CONNECTOR 5...

Page 439: ...NTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTIO MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN 6 USE COPPER CONDUCTORS ONLY ...

Page 440: ...3P X6M X2M A4P X7M X2M X3M NOTES 1 THIS WIRING DIAGRAM APPLIES TO THE BS UNIT ONLY 2 TERMINAL STRIP CONNECTOR FIELD WIRING PROTECTIVE EARTH 3 WHEN USING THE COOL HEAT SELECTOR OPTIONAL ACCESSORY CONNECT IT TO TERMINALS A B AND C ON X2M A1P A4P 4 AS FOR WIRING TO THE X2M X7M CONTROL REFER TO INSTALLATION MANUAL 5 SYMBOLS SHOW AS FOLLOWS BLU BLUE RED RED 6 USE COPPER CONDUCTORS ONLY 7 DIP SWITCH DS1...

Page 441: ...M INDOOR UNIT C INDOOR UNIT X6M F2 M F1 M M M M Y5E F1 F2 F1 C A B A4P DS2 DS1 NOTE 7 PS HAP X4A X5A X6A X7A X8A 6 6 6 6 6 Y1E Y2E Y3E Y4E F1U X1A X1M F2 TO IN D UNIT NOTE 3 X2M INDOOR UNIT D INDOOR UNIT X7M F2 M F1 M M M M Y5E F1 F2 F1 C A B TO OUT D UNIT A5P DS2 DS1 NOTE 7 PS HAP X4A X5A X6A X7A X8A 6 6 6 6 6 Y1E Y2E Y3E Y4E F1U X1A X1M F2 TO IN D UNIT NOTE 3 X2M INDOOR UNIT E INDOOR UNIT X8M F2...

Page 442: ... 0pls Fully open 1375pls Electronic expansion valve Subcooling Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH Low pressure sensor S2NPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharg...

Page 443: ...cooling Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH OFF 4 0 MPa ON 3 0 0 15MPa Low pressure sensor S2NPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T OFF 13...

Page 444: ...ant charge Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Subcooling Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH Low pressure sensor S2NPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T OFF 135 C ...

Page 445: ... Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Subcooling Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH OFF 4 0 MPa ON 3 0 0 15MPa Low pressure sensor S2NPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermist...

Page 446: ...changer R2T ST8602A 15 φ6 L1000 20kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MVE FXCQ 25MVE FXCQ 32MVE FXCQ 40MVE FXCQ 50MVE FXCQ 63MVE FXCQ 80MVE FXCQ 125MVE Remote Controller Wired Remote Controller BRC1E51 Option Wireless Remote Controller BRC7C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ10W 1φ15W 1φ20W 1φ...

Page 447: ...mistor Heat Exchanger R2T ST8602A 3 φ6 L630 20kΩ 25 C Others Float Switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXKQ 25MAVE FXKQ 32MAVE FXKQ 40MAVE FXKQ 63MAVE Remote Controller Wired Remote Controller BRC1E51 Option Wireless Remote Controller BRC4C61 Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 4P 1φ20W 4P 1φ45W 4P Thermal Fuse 146 C Thermal pro...

Page 448: ... φ6 L 800 20kΩ 25 C Others Float Switch S1L FS 0211E Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXSQ 20MVE FXSQ 25MVE FXSQ 32MVE FXSQ 40MVE FXSQ 50MVE FXSQ 63MVE FXSQ 80MVE FXSQ 100MVE FXSQ 125MVE Remote Controller Wired Remote Controller BRC1E51 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ50W 1φ65W 1φ85W 1φ125W 1φ225W Therm...

Page 449: ...Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ380W 2 Capacitor for Fan Motor C1R 10µ F 400V 12µ F 400V Thermistors Thermistor Suction Air R1T ST8601A 13 φ4 L630 Thermistor for Heat Exchanger High Temp R3T ST8605A 5 φ8 L1000 Thermistor Heat Exchanger R2T ST8602A 6 φ6 L1250 Others Float switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol ...

Page 450: ...C4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 1φ25W 1φ35W Thermal protector 135 C OFF 120 C ON Capacitor for Fan Motor C1R 1 0µF 400V 0 5µF 400V 1 0µF 400V 1 5µF 400V 2 0µF 400V Thermistors Thermistor Suction Air R1T ST8601 6 φ4 L1250 20kΩ 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 9 φ8 L2500 20kΩ 25 C Thermistor for Heat Exchanger R2T ST8602A 9 φ6 L2500 20kΩ 25 C Others Fuse F1U ...

Page 451: ...daptor for outdoor unit Must be installed on indoor units DTA104A62 DTA104A61 DTA104A61 DTA104A53 DTA104A61 DTA104A61 DTA104A62 DTA104A61 DTA104A61 13 Interface adaptor for SkyAir series Note 7 DTA102A52 No Part name Model No Function 1 Adaptor for wiring KRP1B56 KRP1B57 KRP1B61 KRP1B3 PCB when equipped with auxiliary electric heater in the indoor unit 2 DIII NET Expander Adaptor DTA109A51 Up to 1...

Page 452: ... system using the Internet and a Web browser application on a PC 2 3 Eco DAM003A51 ECO Energy saving functions 2 4 Optional DIII Ai unit DAM101A51 External temperature sensor for intelligent Manager III 2 5 Di unit DEC101B51 Input contacts 16 points 2 6 Dio unit DEC102B51 Input contacts 8 points output contacts 4 points 3 Communication line 1 Interface for use in BACnet DMS502B51 Interface unit to...

Page 453: ...VRV III H R REYQ26PY1 REYQ28PY1 REYQ30PY1 REYQ32PY1 Distributive Piping REFNET header Model KHRP25M33H KHRP25M72H KHRP25M73H Max 8 branch Max 8 branch Max 8 branch REFNET joint Model KHRP25A22T KHRP25A33T KHRP25A72T KHRP25M72TP KHRP25A73T KHRP25M73TP Outdoor unit multi connection piping kit Model BHFP26P90 Central drain pan kit Model KWC26C280 KWC26C450 KWC26C450 2 Digital pressure gauge kit Model...

Page 454: ...ocation less than 2m from multi connection kit Connection Kit A Connection Kit B 5m or less than 5m Maximum length from a connection kit 10m or less from first branch Equivalent Piping Length 13m Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope V3036 In the case of 2m or...

Page 455: ...is not collected Vertical Projection V3040 Max allowable Piping Length Outdoor Unit Multi Connection Piping Kit Actual piping length 10m or less equivalent length 13m or less Multi Connection Piping Kit Indoor Unit Actual piping length 165m or less equivalent length 190m or less the total extension 1000m or less REFNET Joint Indoor Unit Actual piping length 40m or less Refer to Page 448 Note 2 in ...

Page 456: ...Piping Installation Point SiBE37 701_B 445 Appendix ...

Page 457: ...tdoor unit Outdoor unit B1 B4 BS Unit 1 6 Indoor unit Cool Heat selection possible 7 8 Indoor unit Cooling only B1 B5 BS Unit 1 4 7 8 Indoor unit Cool Heat selection possible 5 6 Indoor unit Cooling only B1 B4 BS Unit 1 6 Indoor unit Cool Heat selection possible 7 8 Indoor unit Cooling only a b c d e REFNET joint A G s r r n p B4 B3 m o q H3 H2 8 7 6 5 4 3 2 1 F G B1 f i k g B C D E A B2 r s t u j...

Page 458: ...x KHRP25M73H KHRP25M73HP KHRP26M73H KHRP26M73HP Number of outdoor unit Connecting piping kit name 2 units BHFP26P90 3 units BHFP26P136 Example REFNET joint C Indoor units 5 6 7 8 Example REFNET joint B Indoor units 7 8 Example REFNET header Indoor units 1 2 3 4 5 6 Example REFNET header Indoor units 1 2 3 4 5 6 7 8 Piping between outdoor unit 2 and refrigerant branch kit part A Choose from the fol...

Page 459: ...YQ26 48PY1 φ19 1 φ22 2 Note 1 When the equivalent pipe length between outdoor and indoor units is 90m or more the size of main pipes on the liquid side refer to figure 9 must be increased according to the right table Never increase suction gas pipe and HP LP gas pipe Refer to figure 9 1 Outdoor unit 2 Main pipes 3 Increase only liquid pipe size 4 First refrigerant branch kit 5 BS unit 6 Indoor uni...

Page 460: ...Example of connection SiBE37 701_B 449 Appendix ...

Page 461: ... 53 5 6 53 4 53 71 4 5 52 38 54 6 65 54 5 6 53 5 51 09 5 5 49 83 55 6 41 55 5 6 53 6 48 61 6 5 47 42 56 6 18 56 5 6 06 7 46 26 7 5 45 14 57 5 95 57 5 5 84 8 44 05 8 5 42 98 58 5 74 58 5 5 43 9 41 95 9 5 40 94 59 5 14 59 5 5 05 10 39 96 10 5 39 01 60 4 96 60 5 4 87 11 38 08 11 5 37 18 61 4 79 61 5 4 70 12 36 30 12 5 35 45 62 4 62 62 5 4 54 13 34 62 13 5 33 81 63 4 46 63 5 4 38 14 33 02 14 5 32 25 6...

Page 462: ... 72 32 78 72 5 32 23 122 7 06 122 5 6 97 23 218 24 23 5 213 51 73 31 69 73 5 31 15 123 6 87 123 5 6 78 24 208 90 24 5 204 39 74 30 63 74 5 30 12 124 6 69 124 5 6 59 25 200 00 25 5 195 71 75 29 61 75 5 29 12 125 6 51 125 5 6 42 26 191 53 26 5 187 44 76 28 64 76 5 28 16 126 6 33 126 5 6 25 27 183 46 27 5 179 57 77 27 69 77 5 27 24 127 6 16 127 5 6 08 28 175 77 28 5 172 06 78 26 79 78 5 26 35 128 6 0...

Page 463: ...Side VDC Detected Pressure PH PL kg cm2 MPa 127 5 12 5 0 5 High Pressure PH Low Pressure PL 122 4 12 0 117 3 11 5 112 2 11 0 107 1 10 5 102 0 10 0 96 9 9 5 91 8 9 0 86 7 8 5 81 6 8 0 76 5 7 5 71 4 7 0 66 3 6 5 61 2 6 0 56 1 5 5 51 0 5 0 45 9 4 5 40 8 4 0 35 7 3 5 30 6 3 0 25 5 2 5 20 4 2 0 15 3 1 5 10 2 1 0 5 1 0 5 0 0 05 5 1 0 5 0 4790 5 1 1 5 2 2 5 3 3 5 4 VDC Output Voltage VH VL ...

Page 464: ... for the checking Test points h Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance Preparation h To make measurement disconnect all connectors and terminals Inverter PCB Electronic circuit According to the checking aforementioned it is probed that the malfunction results from the faulty inverter The following section describes supposed causes of the f...

Page 465: ...10 U N3 2 to 15kΩ 10 U N3 Not less than 1 2V including It may take time to determine the voltage due to capacitor charge or else 11 V N3 11 V N3 12 W N3 12 W N3 When using the analog type of multiple tester make measurement in resistance measurement mode in the x1kΩ range When using the digital type of multiple tester make measurement in diode check mode No Measuring point Criterion Remark No Meas...

Page 466: ... 701_B 455 Precautions for New Refrigerant R 410A Part 8 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 456 1 1 Outline 456 1 2 Refrigerant Cylinders 458 1 3 Service Tools 459 ...

Page 467: ...f HFC32 HFC125 and HFC134a 1 Quasi azeotropic mixture of HFC32 and HFC125 1 Single component refrigerant Design pressure 3 2 MPa gauge pressure 32 6 kgf cm2 4 0 MPa gauge pressure 40 8 kgf cm2 2 75MPa gauge pressure 28 0 kgf cm2 Refrigerant oil Synthetic oil Ether Mineral oil Suniso Ozone destruction factor ODP 0 0 0 05 Combustibility None None None Toxicity None None None Pressure Enthalpy curves...

Page 468: ...220 0 20 41 1 491 0 921 182 9 419 8 1 003 1 910 10 575 26 573 20 1212 5 21 86 1 499 0 933 185 9 420 5 1 014 1 906 8 616 03 613 78 1204 9 23 39 1 507 0 947 189 0 421 2 1 025 1 902 6 658 97 656 52 1197 2 25 01 1 516 0 960 192 0 421 9 1 036 1 898 4 704 15 701 49 1189 4 26 72 1 524 0 975 195 0 422 6 1 048 1 894 2 751 64 748 76 1181 4 28 53 1 533 0 990 198 1 423 2 1 059 1 890 0 801 52 798 41 1173 4 30 ...

Page 469: ...ed in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or roll them on the ground 3 Storage Although R 410A is not flammable it must be stored in a well ventilated cool and dark place in the same way as any other high pressure gases It should also be noted that...

Page 470: ...hread specification differs for R 410A and R 407C Charging cylinder Weighting instrument used for HFCs Gas detector The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument Charge mouthpiece Seal material is different between R 22 and HFCs Thread specification is different betw...

Page 471: ...iously a pipe extension margin of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with pipe extension margin adjustment can be used Nominal size Tube O D A Do Class 2 R 410A Class 1 Conventional 1 4 6 35 9 1 9 0 3 8 9 52 13 2 13 0 1 2 12 70 16 6 16 2 5 8 15 88 19 7 19 4 3 4 19 0...

Page 472: ...eed z Maximum degree of vacuum 50 l min 50Hz Select a vacuum pump which is able to keep 60 l min 60Hz the vacuum degree of the system in excess of Suction port UNF7 16 20 1 4 Flare 100 7 kPa 5 torr 755 mmHg UNF1 2 20 5 16 Flare with adaptor Differences Equipped with function to prevent reverse oil flow Previous vacuum pump can be used by installing adaptor Nominal size Class 1 Class 2 Previous 1 2...

Page 473: ...cts hydrogen 5 Refrigerant oil Air compal Specifications Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle Offers high rust resistance and stability over long period of time Differences Can be used for R 410A and R 22 units 6 Gauge manifold for R 410A Specifications High pressure gauge 0 1 to 5 3 MPa 76 cmHg to 53 kg cm2 Low pressure gauge 0 1 to 3 8 MPa 76...

Page 474: ...le with and without hand operate valve that prevents refrigerant from outflow Differences Pressure proof hose Change in service port diameter Use of nylon coated material for HFC resistance 8 Charging cylinder Specifications Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder Differences The cylinder can not be used for mixed refrigerant since mixing ratio ...

Page 475: ... check liquid refrigerant charging A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences Measurement is based on weight to prevent change of mixing ratio during charging 10 Charge mouthpiece Specifications For R 410A 1 4 5 16 2min 2 5min Material is changed from CR to H NBR Differences Change of thread specification on hose connection sid...

Page 476: ...Revision History Date News No Contents 2010 9 10 M 10011 Correction of service manual ...

Page 477: ...al carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 ...

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