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Daikin VRV III REYQ8PY1B, Service Manual


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Outline of Control (Indoor Unit)

SiBE37-701

148

Function

6.5

Freeze Prevention

Freeze 
Prevention by Off 
Cycle (Indoor 
Unit)

When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit 
heat exchanger drops too low, the unit enters freeze prevention operation in accordance with 
the following conditions, and is also set in accordance with the conditions given below. 

When freeze prevention is activated, the electronic expansion valve is closed, the drain pump 
turns ON and the fan tap is fixed to L air flow.  When the following conditions for stopping are 
satisfied, 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 air flow direction is two-way or three-way]
Conditions for starting: Temperature is 1ºC or less for a total of 15 minutes or 0ºC or less for 1 
minute continuously.

–

5

ºC

0

ºC

+

7

ºC

–

1

ºC

t1

t2

t3

t4

0

ºC

+

7

ºC

10 min.

(VG005)

OR

10 min.

10 min.

Freeze prevention operation
Forced OFF by thermostat

Freeze prevention operation
Forced OFF by thermostat

t 

>

40

min.

0

ºC

+

7

ºC

10 min.

1 min.

Freeze prevention operation
Forced OFF by thermostat

+

1

ºC

t1

t2

t3

t4

+

7

ºC

10 min.

Freeze prevention operation
Forced OFF by thermostat

OR

t 

>

15

min.

Summary of Contents for VRV III REYQ8PY1B

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

Page 2: ...1 1 3 BS Units 54 Part 3 Refrigerant Circuit 55 1 Refrigerant Circuit 56 1 1 REYQ8P 10P 12P 56 1 2 REYQ14P 16P 58 1 3 REMQ8P Multi 8HP 60 1 4 REMQ10P 12P Multi 10 12HP 62 1 5 REMQ14P 16P Multi 14 16HP...

Page 3: ...bition 138 6 Outline of Control Indoor Unit 139 6 1 Operation Flow Chart 139 6 2 Thermostat Control 141 6 3 Drain Pump Control 145 6 4 Control of Electronic Expansion Valve 147 6 5 Freeze Prevention 1...

Page 4: ...Actuation of High Pressure Switch 273 3 15 E4 Outdoor Unit Actuation of Low Pressure Sensor 275 3 16 E5 Outdoor Unit Inverter Compressor Motor Lock 277 3 17 E6 Outdoor Unit STD Compressor Motor Overc...

Page 5: ...nsmission between Remote Controller and Indoor Unit 336 3 50 U7 Outdoor Unit Transmission Failure Across Outdoor Units 337 3 51 U8 Indoor Unit Malfunction of Transmission between Main and Sub Remote C...

Page 6: ...n Point 431 5 1 Piping Installation Point 431 5 2 The Example of a Wrong Pattern 432 6 Example of connection 433 7 Thermistor Resistance Temperature Characteristics 437 8 Pressure Sensor 439 9 Method...

Page 7: ...plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipme...

Page 8: ...he 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 o...

Page 9: ...ice 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...

Page 10: ...l shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainag...

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 t...

Page 12: ...01 General Information 1 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 Sele...

Page 13: ...Cassette FXKQ 25MA 32MA 40MA 63MA VE Slim Concealed Ceiling Unit FXDQ PVE 20P 25P 32P FXDQ NAVE 40NA 50NA 63NA Concealed Ceiling Unit Small FXDQ 20M 25M V3 Concealed Ceiling Unit FXSQ 20M 25M 32M 40M...

Page 14: ...y Blow Ceiling Mounted Cassette FXCQ20M FXCQ25M FXCQ32M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M Wall Mounted Unit FXAQ20MA FXAQ25MA FXAQ32MA FXAQ40MA FXAQ50MA FXAQ63MA Ceiling Mounted Corner Cassette...

Page 15: ...28P REYQ8P 10P 12P 14P 16P 8 10 12 14 16 HP 22 4 40 0 45 0 kW 26 28 HP 73 0 78 5 kW REYQ30P 32P REYQ34P 36P 38P 40P 30 32 HP 85 0 90 0 kW 42 44 HP 118 124 kW 46 48 HP 130 135 kW REYQ18P 20P 22P 24P 1...

Page 16: ...t 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 Mod...

Page 17: ...2P 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 connectab...

Page 18: ...Blow Ceiling Mounted Cassette FXZQ 20M 25M 32M 40M 50M V1 2 Way Blow Ceiling Mounted Cassette FXCQ 20M 25M 32M 40M 50M 63M 80M 125M V3 Ceiling Mounted Corner Cassette FXKQ 25MA 32MA 40MA 63MA VE Slim...

Page 19: ...qualizer 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...

Page 20: ...SiBE37 701 Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Outdoor Units 10 1 2 Indoor Units 21 1 3 BS Units 54...

Page 21: ...Soft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 35 2 Air Flow Rate I s 3 166 3 166 m min 190 190 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe 9 5 C1220T Brazi...

Page 22: ...rting Method Soft Start Soft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 75 2 Air Flow Rate I s 3 500 3 916 m min 210 235 Drive Direct Drive Direct Drive Connecting Pipes Liqui...

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 Air Flow Rate I s 4...

Page 24: ...7 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 Air Flow Rate I s 3 000 3 083 3 000 3 333 m min 180 185 180...

Page 25: ...2 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 75 2 Air Flow Rate I s 3 083 3 333 3 333 3 333 m min 185 200 200 200 Drive...

Page 26: ...kW 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 Air Flow Rate I s 3 083 3 833...

Page 27: ...5 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 Air Flow Rate I s 3 833 3 833 3 833 3 833 m min 230 2...

Page 28: ...ts 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 A...

Page 29: ...s kW 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 Air Flow Ra...

Page 30: ...of 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 Air Flow Rate I s...

Page 31: ...4 5 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 Air Flow Rate I s 3 833 3 833 3 833 3 833 3 8...

Page 32: ...Empty Tubeplate Hole 4 4 Fin Fin type Cross fin coil Multi louver fins and Hi XSS tubes Fan Type Turbo fan Quantity 1 1 1 1 1 Air Flow Rate Cooling High m min 12 5 12 5 12 5 13 5 15 5 Low m min 9 0 9...

Page 33: ...0PVEB FXFQ125PVEB Capacity Cooling kW 7 1 9 0 11 2 14 0 Heating kW 8 0 10 0 12 5 16 0 Power Input Cooling kW 0 095 0 120 0 173 0 258 Heating kW 0 114 0 108 0 176 0 246 Casing Material Galvanised steel...

Page 34: ...mold resistance Standard Accessories Standard Accessories Installation and operation manual Drain hose Washer for hanging bracket Screws Sealing Pads Insulation for fitting Clamp for drain hose Instal...

Page 35: ...FLA MFA 4 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 FXFQ63PVEB FXFQ80PVEB FXFQ100PVEB FXFQ...

Page 36: ...igh W 55 55 55 55 55 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 47 0 47 0 49 0 53 0 58 0 Cooling Sound Pressure High dBA 30 0 30 0 32 0 36 0 41 0 Low dBA 25...

Page 37: ...V1B Power Supply Name V1 Phase 1 1 1 1 1 Frequency Hz 50 50 50 50 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 80 0 80 0 80 0 80 0 90 Maximum fuse amps MFA A 15 00 15 00 15 00 15 00 15 00...

Page 38: ...ube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 2 2 Air Flow 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...

Page 39: ...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 patter...

Page 40: ...pe Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantily 2 3 3 Air Flow Rate Cooling High m min 16 5 26 0 33 0 Low m min 13 0 21 0 25 0 Heating High m min 1...

Page 41: ...cessories 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...

Page 42: ...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 FXCQ63MV3B F...

Page 43: ...Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 38 0 38 0 40 0 42 0 Low dBA 33 0 33 0 34 0 37 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 9 5 Gas...

Page 44: ...VE FXKQ40MAVE FXKQ63MAVE Power Supply Name VE Phase 1 1 1 1 Frequency Hz 50 50 50 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 30 0 30 0 30 0 50 Maximum fuse amps MFA A 15 00 15 00 15 00...

Page 45: ...dBA 29 0 29 0 29 0 30 0 31 0 32 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 Diame...

Page 46: ...amps FLA A 0 60 0 60 0 60 0 80 0 80 0 90 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 b...

Page 47: ...7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 Air Flow Rate Cooling High m min 6 70 7 40 Low m min 5 20 5 80 Heating High m min 6 70 7 40 Low m min 5 2...

Page 48: ...2 ELECTRICAL SPECIFICATIONS FXDQ20MV3B FXDQ25MV3B Power Supply Name V1 Phase 1 1 Frequency Hz 50 50 Voltage V 230 230 Current Minimum circuit amps MCA A 0 20 0 20 Maximum fuse amps MFA A 16 00 16 00 F...

Page 49: ...Stages 14 14 14 14 14 Empty Tubeplate Hole 14 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 1 1 Air Flow Rate Cooling High m min 9...

Page 50: ...itting Quantity 2 2 2 2 2 Standard Accessories Washer for hanger bracket Quantity 8 8 8 8 8 Standard Accessories Screws for duct flanges Quantity 6 6 6 8 8 Standard Accessories Screws for fixing the p...

Page 51: ...221 0 338 0 338 0 338 Nr of Stages 14 14 14 14 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 2 3 3 3 Air Flow Rate Cooling High m min 21 0...

Page 52: ...Insulation for fitting Quantity 2 2 2 2 Standard Accessories Washer for hanger bracket Quantity 8 8 8 8 Standard Accessories Screws for duct flanges Quantity 12 16 16 16 Standard Accessories Screws fo...

Page 53: ...ncerning conditional connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXSQ63MV3B FXSQ80MV3B FXSQ100MV...

Page 54: ...ping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 9 5 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 15 9 15 9 Drain Diameter mm 32 32 32 32 Heat Insulation Glass fiber Refrige...

Page 55: ...Diameter mm 9 5 9 5 9 5 9 5 Gas Type Flare connection Flare connection Braze connection Braze connection Diameter mm 15 9 15 9 19 1 22 2 Drain Diameter mm 32 32 PS1B PS1B Heat Insulation Glass fiber R...

Page 56: ...l connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXMQ100MAVE FXMQ125MAVE FXMQ200MAVE FXMQ250MAVE Po...

Page 57: ...h dBA 36 0 39 0 45 0 Low dBA 31 0 34 0 37 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 9 5 9 5 Gas Type Flare connection Diameter mm 12 7 15 9 15 9 Drain Diameter mm 26 26 26 H...

Page 58: ...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 va...

Page 59: ...86M QCL9686M Output high W 40 40 40 43 43 43 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 36 0 37 0 39 0 42 0 46 0 Low dBA 29 0 29 0 29 0 34 0 36 0 39 0 Piping conne...

Page 60: ...0 20 0 30 0 30 0 30 0 30 0 50 Voltage range Minimun 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 abo...

Page 61: ...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 conn...

Page 62: ...A 0 20 0 20 0 50 0 50 0 50 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 ab...

Page 63: ...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 c...

Page 64: ...FLA A 0 20 0 20 0 50 0 50 0 50 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...

Page 65: ...mm C1220T brazing connection 1 9 5mm C1220T brazing connection 9 5mm C1220T brazing connection Gas Pipes 15 9mm C1220T brazing connection 1 15 9mm C1220T brazing connection 2 22 2mm C1220T brazing con...

Page 66: ...P 16P 58 1 3 REMQ8P Multi 8HP 60 1 4 REMQ10P 12P Multi 10 12HP 62 1 5 REMQ14P 16P Multi 14 16HP 64 1 6 BS Unit Functional Parts 66 1 7 Indoor Units 67 2 Functional Parts Layout 68 2 1 REYQ8P 10P 12P 6...

Page 67: ...en pressure increases to stop operation and avoid high pressure increase in the fault operation 23 S2PH HP pressure switch For STD 24 Pressure regulating valve Liquid pipe This is used when pressure i...

Page 68: ...Pipe Dual Pressure Gas Pipe Liquid Pipe Subcool Heat Exchanger 2 Subcool Heat Exchanger 1 Heat Exchanger 2 Heat Exchanger 1 STD S2PH Stop Valve Stop Valve Stop Valve Gauge Port Left Gauge Port 19 18 4...

Page 69: ...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 ca...

Page 70: ...ction Pipe Stop Valve Stop Valve Stop Valve Gauge Port 50 26 48 8 45 46 18 19 23 33 28 2 41 40 26 39 37 10 35 36 20 12 22 31 3 7 38 17 5 13 25 27 30 16 32 1 21 29 14 15 28 24 9 47 6 4 11 Liquid Pipe I...

Page 71: ...sure increase 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 stora...

Page 72: ...ircuit 61 REMQ8P S1NPH INV S1PH 7 S2NPL Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 39 4 17 10 16...

Page 73: ...essure increase in the fault operation 20 S2PH HP pressure switch For STD compressor 1 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components...

Page 74: ...MQ10P 12P 40 7 9 6 Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 39 4 10 17 16 8 31 26 19 20 18 32 3...

Page 75: ...fault operation 20 S2PH HP pressure switch For STD compressor 1 21 S3PH HP pressure switch For STD compressor 2 22 Pressure regulating valve Liquid pipe This is used when pressure increases to preven...

Page 76: ...40 22 17 10 16 19 32 1 2 3 13 12 25 11 23 34 33 20 30 4 9 6 7 24 38 39 5 15 35 37 21 26 27 28 29 8 31 18 36 Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Va...

Page 77: ...lve 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 exp...

Page 78: ...ted 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 ga...

Page 79: ...68 Refrigerant Circuit 2 Functional Parts Layout 2 1 REYQ8P 10P 12P Plan Front View Note For reference numbers refer to page 56 19 18 11 23 10 17 34 33 12 22 16 13 14 15 4 36 46 47 48 42 45 6 8 9 2 4...

Page 80: ...al Parts Layout Refrigerant Circuit 69 2 2 REYQ14P 16P Plan Front View Note For reference numbers refer to page 58 19 18 11 23 10 17 33 32 22 12 16 15 13 14 36 46 47 48 41 45 4 9 6 8 2 35 1 31 39 37 3...

Page 81: ...Parts Layout SiBE37 701 70 Refrigerant Circuit 2 3 REMQ8P Plan Front View Note For reference numbers refer to page 60 REFRIGERANT REGULATOR 11 7 9 25 19 32 31 10 8 18 40 38 16 15 36 37 39 35 12 13 4 6...

Page 82: ...onal Parts Layout Refrigerant Circuit 71 2 4 REMQ10P 12P Plan Front View Note For reference number refer to page 62 REFRIGERANT REGULATOR 11 7 9 25 20 19 33 31 31 10 8 18 40 38 16 15 36 37 39 35 12 13...

Page 83: ...ut SiBE37 701 72 Refrigerant Circuit 2 5 REMQ14P 16P Plan Front View Note For reference number refer to page 64 REFRIGERANT REGULATOR 11 7 9 25 19 20 21 34 33 32 8 18 40 38 31 10 2 3 30 17 4 5 6 16 36...

Page 84: ...uction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type High temperature high pressure gas High temperature high pressur...

Page 85: ...e BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan LL ON 192pls 192pls OFF S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg...

Page 86: ...re Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ STD HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta Hig...

Page 87: ...iquid Pipe BS Unit Suction Pipe S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD INV High temperature high p...

Page 88: ...EVSC Indoor Unit Heating Unit BS Unit Suction Pipe Fan LL ON S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S2N...

Page 89: ...Suction Pipe EVH EVL EVHS EVLS EVSC Heating Unit S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD High t...

Page 90: ...ure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 160pls S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg...

Page 91: ...Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 160pls 0pls S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ STD HPS EVM EVT Td...

Page 92: ...pe Liquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan ON ON OFF INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc T...

Page 93: ...essure Gas Pipe BS Unit BS Unit Suction Pipe Suction Pipe INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S1NPH S2N...

Page 94: ...re Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta Hig...

Page 95: ...iquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan ON ON 192pls OFF S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT...

Page 96: ...re gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equal...

Page 97: ...rature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigera...

Page 98: ...L EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Cooling Unit Thermostat ON Thermostat ON Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Dual Pressure Gas Pipe Liquid Pipe BS Unit Suction Pipe 0p...

Page 99: ...High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing P...

Page 100: ...SVT SVO SVL SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc TS_A Tsh INVFAN TL S1 HPS Tds1 20SA SVE Tf EVJ SVO SVL SVG SVP SVT S2NPL S1NPH S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe St...

Page 101: ...tion ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual...

Page 102: ...Theromstat ON Operation ON Theromstat ON Operation ON Theromstat OFF EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction P...

Page 103: ...ON Theromstat OFF EVH EVL EVHS EVLS EVSC Cooling Unit EVH EVL EVHS EVLS EVSC Cooling Unit Operation ON Theromstat ON Operation OFF Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop V...

Page 104: ...alve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high...

Page 105: ...Operation ON Theromstat ON Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit 224pls Liquid Pipe Stop Valve Equalizing Pipe...

Page 106: ...ve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high p...

Page 107: ...ve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high p...

Page 108: ...egulating 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 refr...

Page 109: ...tem pressure Finally EVH and EVHS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a heating circuit In cooling operation In equalization To heating o...

Page 110: ...EVLS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit In heating operation In equalization To cooling operation BS Unit Indoor Unit...

Page 111: ...Refrigerant Flow for Each Operation Mode SiBE37 701 100 Refrigerant Circuit...

Page 112: ...7 Stopping Operation 129 4 Protection Control 130 4 1 High Pressure Protection Control 130 4 2 Low Pressure Protection Control 132 4 3 Discharge Pipe Protection Control 134 4 4 Inverter Protection Co...

Page 113: ...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 H...

Page 114: ...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 Liq...

Page 115: ...eover Malfunction Stand by Thermostat ON After completion of startup control Cooling startup Heating startup Thermostat ON Operation mode changeover No Yes Mode changeover Operation mode changeover Ma...

Page 116: ...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 High low...

Page 117: ...ending 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...

Page 118: ...es in any of Pattern 1 through Pattern 3 according to the rotation of outdoor units REYQ22P 24P Pattern 1 Pattern 2 Pattern 3 INV STD1 No 2 No 4 No 1 No 3 REYQ26P 28P INV STD1 No 1 No 3 INV STD1 STD2...

Page 119: ...No 3 No 6 No 9 No 2 No 5 No 8 No 1 No 4 No 7 INV STD1 STD2 No 1 No 4 No 7 No 3 No 6 No 9 No 2 No 5 No 8 INV STD1 STD2 No 2 No 5 No 8 No 1 No 4 No 7 No 3 No 6 No 9 REYQ42P 44P INV STD1 No 1 No 4 INV ST...

Page 120: ...Hz 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...

Page 121: ...N 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 increa...

Page 122: ...Hz 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 21...

Page 123: ...Hz 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 210...

Page 124: ...12 16 16HP To increase Step No STEP No unit1 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...

Page 125: ...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 superhe...

Page 126: ...using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Hold the current step on outdoor unit fan 1 step on outdoor...

Page 127: ...tor Right side Evaporator Outdoor unit Left side Evaporator Right side Condenser GR 25 GR 20 GR 25 GR 20 GR 15 GR 10 GR 15 GR 10 A1 A2 Outdoor unit Note 1 GR is a numeric value representing the curren...

Page 128: ...sor 3 M3C Outdoor unit fan 1 M1F M1F STEP4 Ta 20 C OFF Ta 20 C STEP4 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...

Page 129: ...nic 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 i...

Page 130: ...itions 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 co...

Page 131: ...ion 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 O...

Page 132: ...orized 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...

Page 133: ...d 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 con...

Page 134: ...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 Elect...

Page 135: ...OFF OFF Four way valve for high and low pressure gas pipe selection 20SB Y8S Y2S Holds Holds Electronic expansion valve main EVM Y1E Y3E Y1E 1375pls 0pls Electronic expansion valve subcooling EVT Y2E...

Page 136: ...gerant regulator SVG Y1S Y1S 0pls 0pls Solenoid valve drain pipe of refrigerant regulator SVO Y7S Y7S 0pls 0pls Solenoid valve discharge pipe of refrigerant regulator SVT Y6S Y8S 0pls 0pls Cooling ind...

Page 137: ...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 Superco...

Page 138: ...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 excha...

Page 139: ...C OFF Ta 30 C STEP4 Ta 30 C OFF Outdoor unit fan2 MF2 MF2 Ta 30 C STEP4 Ta 30 C OFF Ta 30 C STEP4 Ta 30 C OFF Electronic expansion valve Main EVM Y1E Y3E Y1E 0 pls Electronic expansion valve Supercool...

Page 140: ...rcooling 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 High low pressure gas pipe sw...

Page 141: ...mal Operation Pc_max 3 47MPa Pc_max 3 55MPa Pc_max 3 47MPa Pc_max 3 24MPa Pc_max 3 64MPa Upper limit compressor step max Max Step When occurring 3 times within 30 min HPS is activated without high pre...

Page 142: ...he maximum value within the system Pc_max 2 94MPa Pc_max 3 42MPa Pc_max 3 31MPa Pc_max 3 31MPa Pc_max 3 64MPa When occurring 3 times within 30 min HPS is activated without high pressure standby thus o...

Page 143: ...value within the system Pe_min 0 34MPa Pe_min 0 39MPa Pe_min 0 29MPa Pe_min 0 25MPa Pe_min 0 07MPa Pe_min 0 15MPa When occurring 4 times within 30 min the malfunction code E4 is output Normal Operatio...

Page 144: ...tion code E4 is output Normal Operation Upper limit compressor step max Max step Upper limit compressor step 2 step up Upper limit compressor step 1 step up During the control of low pressure protecti...

Page 145: ...Tp 110 C HTdi 130 C or HTdi 135 C HTdi 120 C continues for 10 minutes or more or After 30 sec After 20 sec Frequency agreement Tp 135 C HTdi 110 C Tp 125 C 52Hz OFF OFF HTdi 120 C continues for 90 se...

Page 146: ...rotection control Perform the following control of integrated as well as multi units for each INV compressor Normal operation During the control of inverter protection Inverter current value 14 7A INV...

Page 147: ...operation During the control of fin temperature protection Tfin 81 C INV upper limit frequency max 210Hz Tfin 84 C INV Comp upper limit step 1 step up Tfin 81 C continues for 3 minutes Current status...

Page 148: ...sulting from failures of STD compressor such as locking STD compressor ON CT detection current value 15 0A STD compressor OFF for 30 min Demand to operate When occurring 3 times within 90 min the malf...

Page 149: ...compressor 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 Operatio...

Page 150: ...expansion valve Closed 20E MA OFF 52H Aux electric heater OFF 52H Humidifier OFF Mu Humidifier OFF Mu OFF ON a b Set temperature Suction air temperature a b 1 a b 0 5 is only available for the FXCQ F...

Page 151: ...in progress Swing flap Set wind direction Fan Operating with set air flow rate MF Electronic expansion valve Capacity control 20E 20E 20E Fan LL operation MF Fan Operating in L mode MF Fan Stop MF b...

Page 152: ...ear the preset temperature Ex When cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A F This example also assumes there are...

Page 153: ...an be used so that suction temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18...

Page 154: ...rmation on page onward 6 2 3 Thermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation...

Page 155: ...l value 0 C 27 C 25 C 30 C Set cooling heating temp Heating mode Cooling mode Control temp Differential value set to 1 C 26 C 24 5 C 29 C Set heating temp 27 C Set cooling temp Heating mode Cooling mo...

Page 156: ...in the figure below 6 3 1 When the Float Switch is Tripped while the Cooling Thermostat is ON 1 The objective of residual operation is to completely drain any moisture adhering to the fin of the indoo...

Page 157: ...eset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 3 4 When the Float Switch is Tripped and AF is Displayed on the Re...

Page 158: ...As T Remote controller set temp Suction air temp becomes samller SHS becomes higher Sub cooled degree control in heating operation This function is used to adjust the opening of the electronic expans...

Page 159: ...fied 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 Tem...

Page 160: ...F 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 SINPH of th...

Page 161: ...stat 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 direc...

Page 162: ...t condition 2 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 ret...

Page 163: ...ow multi flow and corner types P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Standard Setting position Ceiling soiling preve...

Page 164: ...t Operation 154 1 1 Installation Process 154 1 2 Procedure and Outline 155 1 3 Operation when Power is Turned On 187 2 Outdoor Unit PC Board Layout 188 3 Field Setting 189 3 1 Field Setting from Remot...

Page 165: ...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 Airtight Test and Vacuum Drying 9 Pipe Insulation 10 Checking of...

Page 166: ...tester for other circuits than 200V or 240V circuit 1 Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended period of time af...

Page 167: ...em 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...

Page 168: ...en stop valves Check for excessive refrigerant refilling Automatic judgment of piping length Before starting the normal operation after the completion of check operations make sure indoor and outdoor...

Page 169: ...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 ent...

Page 170: ...es should 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 out...

Page 171: ...linder 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...

Page 172: ...60335 2 40 standard This means that 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...

Page 173: ...7 The 12HP type corresponds to the 12 7 diameter onsite piping using the accessory pipe Suction gas shutoff valve 25 4 The 8HP type corresponds to the 19 1 diameter onsite piping using the accessory p...

Page 174: ...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...

Page 175: ...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...

Page 176: ...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 A...

Page 177: ...rating 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...

Page 178: ...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 proce...

Page 179: ...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 t...

Page 180: ...onnected BS indoor units Be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater 2 Make the onsite settings as needed using the push butt...

Page 181: ...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...

Page 182: ...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 R...

Page 183: ...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 th...

Page 184: ...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 refrige...

Page 185: ...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 o...

Page 186: ...r 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 displa...

Page 187: ...ote controller Refer to Remote controller malfunction code display on page 178 8 Operation When the following LED display is shown open valve A and close the front panel If the front panel is left ope...

Page 188: ...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 immed...

Page 189: ...slave unit 2 flashing PA PH and PC all units After recplacing the cylinder open valve A again and continue the work In case of an outdoor multi system replacing the refrigerant tank of the outdoor un...

Page 190: ...will return 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 uni...

Page 191: ...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 operati...

Page 192: ...over 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 se...

Page 193: ...of the H8P multi LED in a multi system shows which unit is the master unit i slave 1 unit j or slave 2 unit h Only the master unit is connected to the indoor units with interunit wiring For changing t...

Page 194: ...on 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 MOD...

Page 195: ...preparation or under test operation 2 Indication of low noise operation state h standard operation factory setting i operation 3 Indication of power consumption limitation setting h standard operatio...

Page 196: ...he field setting as described in the paragraph 1 2 6 3 Field setting on page 181 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...

Page 197: ...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...

Page 198: ...oor outdoor address etc Status 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 UH malfunction...

Page 199: ...Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 HAP V3054 1 Microcomputer normal moni...

Page 200: ...or a minimum of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 During group control when setting by each indoor unit mode No 20 22 and 23 have been selec...

Page 201: ...e field set mode 2 Select the desired 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 setting...

Page 202: ...ch indoor unit mode No 20 22 and 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...

Page 203: ...nly body thermostat Only remote controller thermostat 3 3 Display time to clean air filter calculation Set when filter sign is not to be displayed Display No display 4 12 22 0 Optional accessories out...

Page 204: ...loor standing unit Concealed floor standing unit Roundflow 4 way blow 2 way blow Corner type FXFQ FXZQ FXCQ FXKQ FXDQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote...

Page 205: ...cted 5 Optional Output Switching Using this setting operation output signal and abnormal output signal can be provided Output signal is output between terminals K1 and K2 of customized wiring adapter...

Page 206: ...nce over 7 Fan Stop When Thermostat is OFF 9 Setting of operation mode to AUTO This setting makes it possible to change differential values for mode selection while in automatic operation mode The aut...

Page 207: ...e 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...

Page 208: ...ting of the Static Pressure Selection for FXDQ model 17 Humidification When Heating Thermostat is OFF Setting to Humidification Setting turns ON the humidifier if suction temperature is 20 C or above...

Page 209: ...e unit this setting is unnecessary 20 Individual Setting of Ventilation This is set to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat recla...

Page 210: ...t the selected group No 5 Press to return to the NORMAL MODE Note For wireless remote controller see the following For setting group No of HRV and wiring adaptor for other air conditioners etc refer t...

Page 211: ...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 central remote controller only Cannot be turned on off by remote...

Page 212: ...ol by remote controller Controlmode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unifie...

Page 213: ...29 218 222 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...

Page 214: ...oor 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...

Page 215: ...rts PC board After the replacement by the spare PC board be sure to make settings shown below When you change the main PC board A1P to spare parts PC board please carry out the following setting DIP S...

Page 216: ...hes HEAT RECOVERY 8HP REYQ8PY1B Set DS1 4 and DS2 3 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 10HP REYQ10PY1B Set DS1 4 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 12HP REYQ12PY1B Set...

Page 217: ...nd DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 10HP REYQ10PY1B Set DS1 3 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 12HP REYQ12PY1B Set DS1 3 and DS2 2 to ON 1 2 3 1 2 3...

Page 218: ...OFF 4 DS1 DS2 Application model HEAT RECOVERY 8HP REMQ8PY1B HEAT RECOVERY 10HP REMQ10PY1B HEAT RECOVERY 12HP REMQ12PY1B HEAT RECOVERY 14HP REMQ14PY1B HEAT RECOVERY 16HP REMQ16PY1B Set DS1 4 DS2 2 and...

Page 219: ...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 Mul...

Page 220: ...ress BS3 RETURN button Setting item selection SET button Setting mode 2 Set Select mode with BS2 SET button in each selection step Setting condition selection SET button Setting condition Contents dis...

Page 221: ...ode 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...

Page 222: ...ation 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 lo...

Page 223: ...door unit is long in length refrigerant passing sounds may become louder at the time of BS Cool Heat selection This setting shortens the Cool Heat selection time of all BS units provided in the same r...

Page 224: ...h 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 facto...

Page 225: ...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 o...

Page 226: ...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 Low...

Page 227: ...address 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...

Page 228: ...E 1 2 1 2 F2 B C A F2 F1 F1 F2 F1 Outside unit TOIN DUNIT TOOUT DUNIT F1 F2 F1 F2 F1 F2 F1 F2 IN D OUT D BS REMOTE CONTROLLER BS unit A F1 F2 F1 F2 IN D OUT D BS BS unit B COOL HEAT selector Branch wi...

Page 229: ...he 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 lev...

Page 230: ...b target Approx 45 db target Note1 Above values are reference only measured in silent room Note2 Above values are for 1 module only Operation sound of level 2 Operation sound of level 1 Operation soun...

Page 231: ...constant 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...

Page 232: ...en 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 Power consu...

Page 233: ...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 Sett...

Page 234: ...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 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 l...

Page 235: ...ming mode to ON The respective 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...

Page 236: ...the vacuum pump to perform vacuuming operation e Press Mode button BS1 once and reset Setting Mode 2 3 2 8 Check Operation Detail Unit stopping Press the TEST button for 5 seconds 10 sec to 10 minute...

Page 237: ...le 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 Emergen...

Page 238: ...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 sett...

Page 239: ...ore 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 CH...

Page 240: ...utton 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 Pr...

Page 241: ...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 betwe...

Page 242: ...it 266 3 8 AJ Indoor Unit Malfunction of Capacity Determination Device 267 3 9 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 268 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for...

Page 243: ...tion 320 3 42 P4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise Sensor 322 3 43 PJ Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Boar...

Page 244: ...tralized Control 360 4 4 MC Address Duplication Improper Setting 362 5 Troubleshooting OP Unified ON OFF Controller 363 5 1 Operation Lamp Blinks 363 5 2 Display Under Centralized Control Blinks Repea...

Page 245: ...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 imme...

Page 246: ...ation 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 operati...

Page 247: ...e 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 outdoo...

Page 248: ...ion button for more than 4 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Or after 30 minutes After 10 seconds Press Inspection Test Operation button o...

Page 249: ...alfunction code and malfunction contents Note 1 Pressing the INSPECTION TEST button will blink the check indication 2 While in check mode pressing and holding the ON OFF button for a period of five se...

Page 250: ...duct all of the 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 confirme...

Page 251: ...Troubleshooting by Remote Controller SiBE37 701 240 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 252: ...SiBE37 701 Troubleshooting by Remote Controller Troubleshooting 241...

Page 253: ...I Heat Recovery Series Display A A 1 A A 3 A 9 2 A A 5 A A A A A C A A E A 9 E Outdoor model code Model RSXYP RXYP RSEYP RSXYP L RXYQ M RXYQ MA RXYQ P RXQ P REYQ P Unit Malfunction code Inspection Nor...

Page 254: ...r wireless remote controller Mode 43 only can be set 2 Select the unit No For group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the...

Page 255: ...nit When you want to search for the unit No By selecting the unit No with the button you can turn the fan of each indoor unit on forced ON individually 44 Individual setting Set the fan speed and air...

Page 256: ...with a self diagnosis function so that more appropriate maintenance can be carried out If a malfunction occurs during operation the operation lamp malfunction code and display of malfunctioning unit...

Page 257: ...k 277 E6 l l l STD copmressor motor overcurent lock 279 E7 l l l Malfunction of outdoor unit fan motor 280 E9 l l l Malfunction of moving part of electronic expansion valve Y1E Y5E 283 F3 l l l Abnorm...

Page 258: ...oor and outdoor units in the same system 344 UA l l l Improper combination of indoor and outdoor units indoor units and remote controller 345 UC k k k Address duplication of centralized controller 351...

Page 259: ...nal malfunction Abnormal outdoor temperature Ta sensor malfunction short circuited or open H9 Abnormal discharge pipe temperature Td malfunction F3 Abnormal heat exchanger temperature Refrigerant over...

Page 260: ...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...

Page 261: ...eversed 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 ru...

Page 262: ...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...

Page 263: ...als with the remote controller set to external ON OFF terminal Supposed Causes Actuation of external protection device Improper field set Defect of indoor unit PC board Troubleshooting V2776 Caution B...

Page 264: ...eived 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 PC board Troubleshooting Turn power sup...

Page 265: ...XHQ 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 switc...

Page 266: ...ndoor unit PC board Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO The float switch is connected to X8A of the indoor unit PC board NO The drain pump works when the power supply...

Page 267: ...itions 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 insul...

Page 268: ...5 6 7 Red FG Vsp Vcc GND Vdc Vdc 1 GND 2 3 3 FG 4 Vsp 1 2 5 Vcc Measuring point FG GND Vsp GND Vcc GND Vdc GND Criteria Not less than 1M Not less than 100k Not less than 100 Not less than 100k Judgmen...

Page 269: ...he maximum output voltage to the fan Supposed Causes Faulty indoor fan motor Broken wires Faulty contact Troubleshooting Is the power of approx 12VDC supplied between the Pins1 and 3 when the X27A is...

Page 270: ...for the indoor unit fan turns ON while in operation Supposed Causes Faulty power supply for the indoor unit fan motor Clogged drain piping Actuation of the indoor unit safety device Faulty contact in...

Page 271: ...imit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount...

Page 272: ...ce indoor unit PC board NO NO YES NO YES NO YES YES NO 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 When the ai...

Page 273: ...ronic expansion valve main body by using microcomputer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing microcomputer Either of the following...

Page 274: ...ion valve main body When power is supplied YES YES 1 How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve X7A from PC board Measure the resista...

Page 275: ...Models Indoor units except FXFQ models Method of Malfunction Detection Check coil condition of electronic expansion valve by using microcomputer Malfunction Decision Conditions Pin input for electron...

Page 276: ...PC board Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES 1 How to check the coil of electronic expansion valve drive Remove the con...

Page 277: ...m 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...

Page 278: ...is determined Malfunction Decision Conditions When the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected Supposed Causes The capacity setting ad...

Page 279: ...unning Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Caution Be sure...

Page 280: ...ed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Caution Be sure to t...

Page 281: ...s running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Cau...

Page 282: ...uses Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note 1 How to delete the record of malfunction codes Press the Operate Stop button for 4 seconds and mo...

Page 283: ...hardware section between the indoor unit and the outdoor unit are not normal Supposed Causes Defect of outdoor unit PC board A1P Defective connection of inside outside relay wires Troubleshooting Tur...

Page 284: ...t of the high pressure protection switch opens Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode Reference Operating pr...

Page 285: ...h pressure sensor The high pressure sensor is normal and the pressure detected with the PC board is also normal The high pressure has really become high CHECK 5 Referring to information on P372 remove...

Page 286: ...Method 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 co...

Page 287: ...ation on P373 remove the causes by which the low pressure has become low 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pre...

Page 288: ...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 m...

Page 289: ...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 Check if the inverter output voltage bet...

Page 290: ...the 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 com...

Page 291: ...of rotation detected by hole IC during the fan motor operation Malfunction Decision Conditions Overcurrent is detected for INVERTER PC board A2P or fan INVERTER PC board A5P System down is caused by...

Page 292: ...9 for how to check Check the connection status of the connectors Fan motor 1 relay connector or X1A X2A of compressor inverter PC board Fan motor 2 relay connector or X1A X2A of fan inverter PC board...

Page 293: ...nector of the fan motor NO Replace the corresponding fan motor YES Resistance value between the power supply wire terminal of fan motor and the motor frame metal is 1M and below NO Replace the corresp...

Page 294: ...8P 48P Method of Malfunction Detection Check disconnection of connector To be detected based on continuity existence of coil of electronic expansion valve Malfunction Decision Conditions No current is...

Page 295: ...nic expansion valve is connected Replace the connecting cable Replace outdoor unit PC board A1P YES YES NO Ensure correct connection External factor other than malfunction for example noise etc NO The...

Page 296: ...y 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...

Page 297: ...S Discharge pipe thermister is normal and the temperature detection of the main PC board is also normal Actually the temperature of discharge pipe is high Check 3 Remove the factor of overheat operati...

Page 298: ...nment of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor Troubleshooting Refer to Thermistor Resistance Temperature Characte...

Page 299: ...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 tu...

Page 300: ...nnector for the electronic expansion valve of the PC board concerned properly connected NO YES Is the resistance of the electronic expansion valve coil normal See 1 YES NO NO YES Turn OFF the power su...

Page 301: ...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...

Page 302: ...re balanced Check the connector of the fan motor 1 Cut the power supply off 1 Check procedure for fan motor connector 1 Power OFF the fan motor 2 Remove the connector X2A or X4A on the PC board to mea...

Page 303: ...r connection Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3070 Caution Be sure...

Page 304: ...be occurred Is the current sensor mounted on the T phase A6P and R phase A8P wire Are the current sensors inversely connected to two STD compressors Is the connector for current sensor connected to X...

Page 305: ...ipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting The alarm indicator is displayed when the fan is being used also Refer to Thermistor Resistance Temperature Char...

Page 306: ...ion of thermistor Defective thermistor Defective outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3070 Caution Be sure to turn off power...

Page 307: ...r R10T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3073...

Page 308: ...r R4T or R12T for outdoor unit coil Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3074 C...

Page 309: ...Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn off power switch be...

Page 310: ...Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn off power switch be...

Page 311: ...ng heat exchanger gas pipe thermistor R5T or R13T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn of...

Page 312: ...tion 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 th...

Page 313: ...e main PC board Replace the high pressure sensor YES NO Replace the main PC board NO Replace the high pressure sensor YES NO Are the characteristics of the high pressure sensor normal Make a compariso...

Page 314: ...Troubleshooting V2808 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the main PC board Replace the low pressure sensor YES NO...

Page 315: ...Troubleshooting by Indication on the Remote Controller SiBE37 701 304 Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P439...

Page 316: ...ted 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 Malf...

Page 317: ...O YES YES NO Replace the lead wires Replace the compressor and compressor inverter PC board A2P at the same time Replace the inverter PC board A2P Replace the compressor inverter PC board A2P and fan...

Page 318: ...Controller 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 temperat...

Page 319: ...ntrol PC board 3 While in monitor mode check the outdoor unit concerned Individual system Multi system Is the thermistor resistance normal NO YES Replace the thermistor Does the malfunction recur when...

Page 320: ...SiBE37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 309 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P437...

Page 321: ...EYQ8P 48P Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor Malfunction Decision Conditions When an excessive current flows in the power transistor I...

Page 322: ...YES NO NO YES YES YES YES NO NO Power OFF Check if the stop valve is open Check if the compressor lead wires are normal Check if the wiring and connection to the compressor are normal Insulation resi...

Page 323: ...48P Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor Malfunction Decision Conditions When overload in the compressor is detected Inverter secondary cu...

Page 324: ...compressor is 100 k or below Compressor coils are disconnected Connect the compressor lead wires then restart the operation Check 4 Check if the power transistor is normal Malfunction code L8 is disp...

Page 325: ...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 C...

Page 326: ...of the compressor is more than 100k Check if the compressor lead wires are disconnected Go on to the next page Starting failure due to aged operation Charge a right amount of refrigerant Open the sto...

Page 327: ...or more than 6 hours Check if the insulation resistance of the compressor is 100k or over Broken inside the compressor Cancel the sleeping state of refrigerant Replace the inverter compressor Replace...

Page 328: ...between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in certain period Supposed Causes Malfunction of conne...

Page 329: ...e to turn off power switch before connect or disconnect connector or parts damage may be occurred Are the connectors of the inverter PC board main PC board and sub PC board all securely connected Is t...

Page 330: ...ed malfunction code Not the LC malfunction Check the malfunction code again Replace the main PC board A1P Continue operation It is supposed that the malfunction results from causes such as instantaneo...

Page 331: ...verter 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...

Page 332: ...voltage imbalance Even if the power supply voltage is not unbalanced when measuring it there are many cases where it gets unbalanced during nighttime around 6 00PM to 10 00PM No abnormalities are obse...

Page 333: ...ion button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Faulty inverter compressor Faulty fan motor Troubleshooting Caution Be sure to turn off power switch be...

Page 334: ...SiBE37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 323 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P437...

Page 335: ...ntroller Display PJ Applicable Models REYQ8P 48P Method of Malfunction Detection This malfunction is detected according to communications with the inverter Malfunction Decision Conditions Make judgmen...

Page 336: ...eplace the control PC board 1 A1P or the control PC board 3 A3P With multi systems replace the main PC board A1P YES YES YES YES NO NO NO Caution Be sure to turn off power switch before connect or dis...

Page 337: ...hanger 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 pip...

Page 338: ...eplace the thermister Replace the main PC board With individual systems replace the control PC board 1 A1P or the control PC board 3 A3P With multi systems replace the main PC board A1P NO NO YES Rese...

Page 339: ...ly open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supply line phase is replaced Fix the open phase Requires inspection of field power supply...

Page 340: ...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 voltag...

Page 341: ...re of the PC board Even if the PC board is replaced it may cause failure again To avoid that recheck the compressor for ground and for any broken wires Furthermore even after the completion of PC boar...

Page 342: ...lace it if necessary End of measures The malfunction may temporarily result from on site causes Causes Instantaneous power failure open phase noises or else YES YES YES YES YES NO NO NO NO NO Check fo...

Page 343: ...operation is not executed Troubleshooting V3052 Performs the chech operation again and completes the check operation When a leakage detection function is needed normal operation of charging refrigeran...

Page 344: ...heck if the transmission between indoor unit and outdoor unit is correctly executed using microcomputer Malfunction Decision Conditions When transmission is not carried out normally for a certain amou...

Page 345: ...age between RS terminals on the outdoor unit PC board is 200V The fuse on the outdoor unit PC board is blown Check if the normal condition monitor for the microcomputer HAP on the outdoor unit PC boar...

Page 346: ...indication in 2 minutes and over The indoor units PC board indicating U9 are normal Check the indoor units in the other circuits to diagnose failure according to the corresponding malfunction codes S...

Page 347: ...llers Defect of indoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconn...

Page 348: ...alfunction 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 outdoor unit out...

Page 349: ...o on to the Diagnosis Flow 5 Multi connection REYP 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...

Page 350: ...the outdoor unit main PC board NO YES NO Correct the connecting wiring with the outside control adapter Diagnosis Flow 1 Check if any disconnection or connection error is detected in connecting wires...

Page 351: ...condition monitor LED for the outdoor unit main PC board blinks Check if the outdoor unit is powered on Check if the power supply wire for the outside control adapter is connected to 5V supply line C...

Page 352: ...us ofconnectingwiresofMulti Slave2withoutdoormulti Checkifthewiring isdisconnectedorisabout tobedisconnected Check if the outdoor unit REYQ8 16PY1 is connected to multi system Check 3 Check theconnect...

Page 353: ...the outdoor unit Correct the connecting wires of the outdoor multi and then reset the power supply Diagnosis Flow 7 Diagnosis Flow 8 Check the connection status of one of the connecting wires of Outd...

Page 354: ...continue for specified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board Trouble...

Page 355: ...sion within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit in other system Improper connection of transmission wi...

Page 356: ...gerant 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 C...

Page 357: ...3 Check 4 To Diagnosis Flow 3 Faulty combination of outdoor units Check 3 Check 4 Check 3 Check 4 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be...

Page 358: ...he main PC board of the outdoor unit With individual systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Match the refrigerant types of the outdoor unit and the...

Page 359: ...s PC board Check if the unit is not connected to outdoor units of different models Check if the outdoor unit PC board is replaced with PC board for spare parts Check if the spare parts PC board settin...

Page 360: ...BSVQ P Replace the outdoor unit PC board as shown below With individual systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Is the model BSVQ P connected Check...

Page 361: ...ct connector or parts damage may be occurred Diagnosis Flow 7 Diagnosis Flow 8 Correct the connection wiring Replace the BS unit PC board concerned Is the wiring between the BS units correct Check 3 C...

Page 362: ...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 C...

Page 363: ...ection Microcomputer 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...

Page 364: ...length types of cables and wires number of units connected and others If no problems replace the indoor unit PC board NO YES Continued to A on the following page YES Check the indoor unit for which U...

Page 365: ...o P372 A Has the master unit central setting connector been connected NO Correct the wiring Abnormal Correct the connection of the connector NO YES YES Check the transmission wiring with the master un...

Page 366: ...operation Defect of indoor unit PC board 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 tha...

Page 367: ...indoor units 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 aforem...

Page 368: ...ct the outdoor outdoor unit transmission wiring to create the one system status and then check whether or not the system is normal NO Does a UH malfunction occur for all indoor units in the system YES...

Page 369: ...at the same time Supposed Causes Defect of central remote controller PC board Defect of Intelligent Touch Controller PC board Defect of Schedule timer PC board Troubleshooting Replace the central remo...

Page 370: ...he power supply of the central equipment Replace Ve Up controller Set the Reset switch located inside of equipment SS1 been set to the Normal side Replace the central equipment Correct the wiring Some...

Page 371: ...nction 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...

Page 372: ...ntral connector is connected and then reset power supplies of every central equipment Disconnect the master unit central setting connector and connect this connector to different central equipment and...

Page 373: ...ery central equipment Reset the power supplies of every central equipment Replace the central equipment Central equipment Normal It is supposed that the malfunction results from external factors e g n...

Page 374: ...f indoor units Unified ON OFF controller Method of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions Supposed Causes Malfunction of t...

Page 375: ...ter controller disconnected Set the group No correctly Replace the central PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset...

Page 376: ...ized 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 o...

Page 377: ...r schedule timer NO YES YES NO NO Fix the wiring correctly Set reset switch to normal NO NO YES YES YES Is the power supply turned on for all optional controllers for centralized control Reset power s...

Page 378: ...troller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting master controller from the master co...

Page 379: ...ess group 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 disconne...

Page 380: ...urn 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 th...

Page 381: ...ister resistance property is normal Check if the piping temperature connected to the 4 way switch valve is normal Check if the pressure value given by the service checker corresponding to actual measu...

Page 382: ...lue mode in the range of multiplying 1k Point of Measurement Judgment Criteria Remarks No 15k and above including 2 15k 2 15k Due to condenser charge and so on resistance measurement may require some...

Page 383: ...nt of the pressure sensor In cooling High suction air temperature of the condenser In heating High suction air temperature of outdoor unit Short circuit High ambient temperature Is the suction air tem...

Page 384: ...re of the evaporator In heating Low suction air temperature of indoor unit Short circuit Is the suction air temperature not less than 14 C Is the indoor temperature not more than 14 C Low ambient temp...

Page 385: ...e with continuity 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...

Page 386: ...ule timer are not available for combined use 2 The intelligent Touch controller central remote controller and the unified ON OFF controller have been set to Provided with the master unit central setti...

Page 387: ...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...

Page 388: ...ion Refer to information in the Check 11 section Are the voltage characteristics normal Is the connector correctly connected Does the thermistor have normal resistance characteristics Is the pressure...

Page 389: ...erature of outlet air passing through the supercooled section becomes lower Cooling High pressure Low pressure Frequency High pressure drooping control LP is maintained at a constant level To maintain...

Page 390: ...larger Either of the motorized valves becomes fully open Frequency comes to the minimum level Fan control is activated for HP protection under cooling control at low outdoor temperature i e the fan i...

Page 391: ...f 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 l...

Page 392: ...ive oil or refrigerant Faulty inverter PC board E5 Inverter compressor lock The compressor is in the locked status does not rotate Faulty compressor L4 Radiator fin temperature rise The radiator fin t...

Page 393: ...or more Transmission error Overcurrent of inverter compressor When transmissions between the main PC board and the inverter PC board are not normal Main Control PC board Weak current part Heavy curren...

Page 394: ...door Unit 418 3 2 Indoor Side 422 4 Option List 428 4 1 Option List of Controllers 428 4 2 Option Lists Outdoor Unit 430 5 Piping Installation Point 431 5 1 Piping Installation Point 431 5 2 The Examp...

Page 395: ...Piping Diagrams SiBE37 701 384 Appendix 1 Piping Diagrams 1 1 Outdoor Unit REYQ8P 10P 12P 3D058154B S1NPH S2NPL...

Page 396: ...SiBE37 701 Piping Diagrams Appendix 385 REYQ14P 16P 3D058153B S2NPL S1NPH...

Page 397: ...Piping Diagrams SiBE37 701 386 Appendix REMQ8P 3D057743...

Page 398: ...SiBE37 701 Piping Diagrams Appendix 387 REMQ10P 12P 3D057742...

Page 399: ...Piping Diagrams SiBE37 701 388 Appendix REMQ14P 16P 3D057741...

Page 400: ...SiBE37 701 Piping Diagrams Appendix 389 1 2 Indoor Unit FXFQ P...

Page 401: ...Piping Diagrams SiBE37 701 390 Appendix FXZQ Refrigerant pipe connection port diameters mm Model Gas Liquid FXZQ20M 25M 32M 40M 50M 12 7 6 4...

Page 402: ...CQ FXDQ25 25 M FXSQ Refrigerant pipe connection port diameters C 3TW25515 1 C 3TW21175 1C Model Gas Liquid FXSQ20 25 32 40 50 12 70 6 35 FXSQ63 80 100 125 15 90 9 52 FXCQ20 25 32 40 50 12 70 6 35 FXCQ...

Page 403: ...ic expansion valve 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 therm...

Page 404: ...SiBE37 701 Piping Diagrams Appendix 393 FXDQ NA P Refrigerant pipe connection port diameters 4D043864J mm Model Gas Liquid FXDQ20NA P 25NA P 32NA P 40NA 50NAVE 12 7 6 4 FXDQ63NAVE 15 9 9 5...

Page 405: ...Piping Diagrams SiBE37 701 394 Appendix 1 3 BS Unit 4D057985A...

Page 406: ...U F1U F1U F400U K1 K2 K3 K4 K2M H1P 8P HAP K1R K1R K2R K3R K3R K4R K5R K5R K5R K6R K7R K8R K11R K11R L1R M1C M2C M1F M2F PS Q1RP R10 R50 R59 R90 R95 R1T R1T R2T R31T R32T R4T R5T R6T R7T R8T R9T R10T...

Page 407: ...LU ELECTRONIC EXPANSION VALVE CHARGE ELECTRONIC EXPANSION VALVE SUBCOOL 2 SOLENOID VALVE RMTG SOLENOID VALVE 4 WAY VALVE HEAT EXC 1 SOLENOID VALVE RMTL SOLENOID VALVE HOT GAS SOLENOID VALVE EV BYPASS...

Page 408: ...SE FILTER PRINTED CIRCUIT BOARD INV PRINTED CIRCUIT BOARD FAN PUSH BUTTON SWITCH MODE SET RETURN TEST RESET CAPACITOR CAPACITOR CRANKCASE HEATER FUSE T 3 15A 250V A1P FUSE T 3 15A 250V A2P FUSE 8A DC6...

Page 409: ...6P BS1 5 C1 C63 C66 E1HC E2HC F1U F2U F1U F1U F400U H1P 8P HAP K1 K2 K3 K4 K2M K1R K1R K2R K3R K3R K4R K5R K5R K6R K7R K8R K11R L1R M1C M2C M1F PS Q1RP R10 PRINTED CIRCUIT BOARD MAIN PRINTED CIRCUIT B...

Page 410: ...TI UNIT F1 Q2 F2 TO IN D UNIT TO OUT D UNIT Q1 H6P H8P H4P BS3 H5P BS1 H1P BS5 HAP H7P BS2 BS4 H3P H2P X1A 4A X5A X1M X1M Y1E Y2E Y3E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Z1C 10C Z1F CONNECTOR FOR OPTIONAL PAR...

Page 411: ...nts must be provided by licensed electrician FUSE N L2 SWITCH N SWITCH FUSE L1 L2L3 N L L SWITCH L1 MAIN SWITCH FUSE SWITCH N SWITCH N L L3 6 Unit shall be grounded in compliance with the applicable l...

Page 412: ...SION LINE 2 WIRES CABLE POWER LINE FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH L N INDOOR UNITS 2 WIRES CABLE POWER LINE FUSE SWITCH L N 2 WIRES CAB...

Page 413: ...NE FUSE SWITCH L N 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMI...

Page 414: ...SiBE37 701 Wiring Diagrams for Reference Appendix 403 2 3 Indoor Unit FXFQ20P 25P 32P 40P 50P 63P 80P 100P 125PVEB...

Page 415: ...Wiring Diagrams for Reference SiBE37 701 404 Appendix FXZQ20M 25M 32M 40M 50MV1...

Page 416: ...SiBE37 701 Wiring Diagrams for Reference Appendix 405 FXCQ20M 25M 32M 63MV3...

Page 417: ...Wiring Diagrams for Reference SiBE37 701 406 Appendix FXCQ40M 50M 80M 125MV3...

Page 418: ...ED 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 F...

Page 419: ...K WHT WHITE YLW YELLOW PRP PURPLE GRY GRAY BLU BLUE PNK PINK ORG ORANGE GRN GREEN KPR X13A M1P RED X7A L POWER SUPPLY X18A R1T 220V 60Hz X31A X8A BLK TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER WHT...

Page 420: ...SiBE37 701 Wiring Diagrams for Reference Appendix 409 FXDQ20M 25MV3...

Page 421: ...Wiring Diagrams for Reference SiBE37 701 410 Appendix FXSQ20M 25M 32M 40M 50M 63MV3...

Page 422: ...SiBE37 701 Wiring Diagrams for Reference Appendix 411 FXSQ80M 100M 125MV3...

Page 423: ...BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE HIGH E S P OPERATION CHANGE THE WIRING CONNECTION OF X2A AS SHOWN UPPER FIGURE 6 SYMBOLS SHOW AS FOLLOWS PN...

Page 424: ...ED 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 TH...

Page 425: ...MSW P2 YLW X12A TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER X23A X1A A1P NOTE 5 R3T Q1M M X7A BLU NOTE 6 RED WHT T2 X18A X1A F2 POWER SUPPLY BLK C1R NOTE 3 KAR X23A INPUT FROM OUTSIDE X1M R2T WHT EL...

Page 426: ...R ORG NOTE 8 RECEIVER DISPLAY UNIT WIRELESS REMOTE CONTROLLER R3T R1T SS1 WHT N NOTE 8 X15A X35A X18A PNK R2T POWER SUPPLY TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER RED M1S R1T CONNECTOR FOR OPTIO...

Page 427: ...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...

Page 428: ...SWITCH DS1 2 INITIAL SETTINGS ARE AS FOLLOWS FOR USING DIP SWITCH DS1 2 REFER TO INSTALLATION MANUAL OR SERVICE PRECAUTION LABEL ON EL COMPO BOX COVER X2A BSVQ250PV1 F1 DS2 DS1 F1 Y3E POWER SUPPLY 220...

Page 429: ...Fully open 1375pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C...

Page 430: ...2E 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 MP...

Page 431: ...arge Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa...

Page 432: ...Fully closed 0pls Fully open 480pls Electronic expansion valve Subcool 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 S...

Page 433: ...mistor Heat Exchanger R2T ST8602A 5 6 L1000 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MV3 FXCQ 25MV3 FXCQ 32...

Page 434: ...mistor Heat Exchanger R2T ST8602A 3 6 L630 20k 25 C Others Float Switch S1L FS 0211 Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXKQ 25MAVE FXKQ 32MAVE FXKQ 40MAVE FX...

Page 435: ...Fuse 145 C Thermistors Thermistor Suction Air R1T ST8601 1 4 L 250 20k 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 4 8 L 800 20k 25 C Thermistor Heat Exchanger R2T ST8602A 4 6 L 800 20k 25...

Page 436: ...1250 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXMQ 40MAVE FXMQ 50MAVE FXMQ 63MAVE FXMQ 80MAVE FXMQ 100MAVE FXMQ 125MAVE F...

Page 437: ...1250 20k 25 C Thermistor Heat Exchanger R2T ST8602A 6 6 L 1250 20k 25 C ST8602A 6 6 L 1250 20k 25 C Others Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXAQ 20MAVE FX...

Page 438: ...9 8 L2500 20k 25 C Thermistor for Heat Exchanger R2T ST8602A 9 6 L2500 20k 25 C Others Fuse F1U AC250V 5A Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXNQ 20MAVE FXNQ 25MAVE FXNQ 32MAVE F...

Page 439: ...for wiring KRP1B56 KRP1B57 KRP1B61 KRP1B3 PC board when equipped with auxiliary electric heater in the indoor unit 2 DIII NET Expander Adaptor DTA109A51 Up to 1 024 units can be centrally controlled...

Page 440: ...ystem 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...

Page 441: ...V 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 KHRP25A3...

Page 442: ...to level or go up to an outdoor unit and to make a slope V3036 When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertica...

Page 443: ...rong Good Good 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...

Page 444: ...o 165m Equvalent pipe length between outdoor unit 2 and indoor unit 190m Note 1 Assume eqivalent pipe length of REFNET joint to be 0 5m that of REFNET header to be 1m that of BSVQ100 160 to be 4m tha...

Page 445: ...KHRP25M73HP 2 pipes KHRP26M22H or KHRP26M33H KHRP26M33H KHRP26M72H KHRP26M73H KHRP26M73HP Refrigerant branch kit name Example for indoor units connected downstream Example REFNET joint C Indoor units...

Page 446: ...ping size at 6 4 0 37 0 18 0 059 0 26 0 12 0 022 1 02 HEAT RECOVER SYSTEM MODEL NAME THE AMOUNT OF REFRIGERANT REYQ8 16PY1 REYQ18 20PY1 REYQ22 24PY1 REYQ26PY1 REYQ28 30PY1 REYQ32 40PY1 REYQ42PY1 REYQ4...

Page 447: ...Example of connection SiBE37 701 436 Appendix...

Page 448: ...56 49 55 08 53 6 41 6 53 4 53 71 52 38 54 6 65 6 53 5 51 09 49 83 55 6 41 6 53 6 48 61 47 42 56 6 18 6 06 7 46 26 45 14 57 5 95 5 84 8 44 05 42 98 58 5 74 5 43 9 41 95 40 94 59 5 14 5 05 10 39 96 39...

Page 449: ...233 14 71 33 92 33 35 121 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61...

Page 450: ...Low Pressure PL PH Detected Pressure High Side MPa PL Detected Pressure Low Side MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure MPa PL...

Page 451: ...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 termin...

Page 452: ...0 U N3 2 to 15k 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 te...

Page 453: ...Method of Checking the Inverter s Power Transistors and Diode Modules SiBE37 701 442 Appendix...

Page 454: ...701 Precautions for New Refrigerant R 410A 443 Part 8 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 444 1 1 Outline 444 1 2 Refrigerant Cylinders 446 1 3 Service Too...

Page 455: ...opic mixture refrigerant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product R...

Page 456: ...New Refrigerant R 410A 445 Thermodynamic characteristic of R 410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific...

Page 457: ...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 rol...

Page 458: ...ication 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...

Page 459: ...ipe 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 pi...

Page 460: ...d 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...

Page 461: ...s 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 pe...

Page 462: ...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 c...

Page 463: ...heck 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 m...

Page 464: ...n 370 CJ 271 Concept of Inverter related Malfunction Codes 382 Cooling only Heat pump setting 204 Current Sensor Malfunction 293 D Defective Inverter PC Board 305 Detailed Explanation of Setting Modes...

Page 465: ...or Suction Air 270 Malfunction of Thermistor R2T for Heat Exchanger 268 Malfunction of Thermistor R3T for Gas Pipes 269 Malfunction of Thermistor R4T or R12T for Outdoor Unit Heat Exchanger 297 Malfun...

Page 466: ...e 2 211 Startup Control 117 STD Compressor Motor Overcurrent Lock 279 Symptom based Troubleshooting 234 System is not Set yet 355 T The Example of a Wrong Pattern 432 Transmission Failure Across Outdo...

Page 467: ...SiBE37 701 iv Index...

Page 468: ...rter PC Board 305 Detailed Setting Procedure of Low Noise Operation and Demand Control 222 Discharge Pipe Protection Control 134 Display Under Centralized Control Blinks Repeats Double Blink 368 Displ...

Page 469: ...Malfunction of Thermistor R3T for Gas Pipes 269 Malfunction of Thermistor R4T or R12T for Outdoor Unit Heat Exchanger 297 Malfunction of Thermistor R8T or R10T for Suction Pipe 296 Malfunction of The...

Page 470: ...221 Image of Operation in the Case of B 219 221 Simplified Remote Controller 191 BRC2A51 BRC2C51 191 STD Compressor Motor Overcurrent Lock 279 STD Compressor Overload Protection 137 System is not Set...

Page 471: ...SiBE37 701 viii Drawings Flow Charts...

Page 472: ...on Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or...

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