Daikin BSVQ36MVJU Serivce Manual Download Page 213

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Troubleshooting (OP: Schedule Timer)

SiUS39-601

202

Troubleshooting

4.2

“

”

PC Board Defect

Remote
Controller
Display

Applicable
Models

Schedule timer

Method of
Malfunction
Detection

Detect an abnormality in the DIII-NET polarity circuit.

Malfunction
Decision
Conditions

When + polarity and - polarity are detected at the same time.

Supposed
Causes

Defect of schedule timer PC board

Troubleshooting

Caution

Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

Reset power supply.

Does the

system return to normal?

YES

External factor other
than equipment
malfunction (noise etc.)

Replace the schedule
timer.

(V2837)

Summary of Contents for BSVQ36MVJU

Page 1: ...SiUS39 601 RXYQ72 96 144 168 192MTJU R 410A Heat Pump 60Hz RXYQ72MTJU RXYQ96MTJU RXYQ144MTJU RXYQ168MTJU RXYQ192MTJU ...

Page 2: ...Part 3 Refrigerant Circuit 23 1 Refrigerant Circuit 24 1 1 RXYQ72M 96M 24 2 Functional Parts Layout 26 2 1 RXYQ72M 96M 26 3 Refrigerant Flow for Each Operation Mode 27 Part 4 Function 31 1 Operation Mode 32 2 Basic Control 33 2 1 Normal Operation 33 2 2 Compressor PI Control 34 2 3 Electronic Expansion Valve PI Control 38 2 4 Cooling Operation Fan Control 39 3 Special Control 40 3 1 Startup Contro...

Page 3: ...om Outdoor Unit 81 Part 6 Troubleshooting 105 1 Troubleshooting by Remote Controller 108 1 1 The INSPECTION TEST Button 108 1 2 Self diagnosis by Wired Remote Controller 109 1 3 Self diagnosis by Wireless Remote Controller 110 1 4 Operation of The Remote Controller s Inspection Test Operation Button 112 1 5 Remote Controller Service Mode 113 1 6 Remote Controller Self Diagnosis Function 115 2 Trou...

Page 4: ...xchanger Deicer 154 2 28 J7 Malfunction of Receiver Outlet Liquid Pipe Thermistor R6T 155 2 29 J8 Malfunction of Oil Equalizing Pipe Thermistor R7T 156 2 30 J9 Malfunction of Sub Cooling Gas Pipe Thermistor R5T 157 2 31 JA Outdoor Unit Malfunction of Discharge Pipe Pressure Sensor 158 2 32 JC Outdoor Unit Malfunction of Suction Pipe Pressure Sensor 160 2 33 L4 Outdoor Unit Malfunction of Inverter ...

Page 5: ... Malfunction of Transmission Between Optional Controllers for Centralized Control 195 3 3 MA Improper Combination of Optional Controllers for Centralized Control 197 3 4 MC Address Duplication Improper Setting 199 4 Troubleshooting OP Schedule Timer 200 4 1 UE Malfunction of Transmission Between Central Remote Controller and Indoor Unit 200 4 2 M1 PC Board Defect 202 4 3 M8 Malfunction of Transmis...

Page 6: ...s 235 4 2 Option Lists Outdoor Unit 236 5 Example of Connection 237 6 Thermistor Resistance Temperature Characteristics 239 7 Pressure Sensor 241 8 Method of Replacing The Inverter s Power Transistors and Diode Modules 242 8 1 Method of Replacing The Inverter s Power Transistors and Diode Modules 242 Part 9 Precautions for New Refrigerant R 410A 245 1 Precautions for New Refrigerant R 410A 246 1 1...

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 equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the dischargi...

Page 8: ...se the welder in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the e...

Page 9: ...xcessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leak cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from...

Page 10: ...tion platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding can cause an electrical 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 drainage of the indo...

Page 11: ...06 VRV series Heat Pump System Daikin offers a wide range of models to respond to building and office air conditioning needs We are confident that customers will be able to find the models that best suit their needs This service manual contains information regarding the servicing of VRV series Heat Pump System Oct 2006 After Sales Service Division ...

Page 12: ...SiUS39 601 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 3 3 Model Selection 4 ...

Page 13: ...ed Cassette Type Multi Flow FXFQ 12M 18M 24M 30M 36M VJU Slim Ceiling Mounted Duct Type FXDQ 07M 09M 12M 18M 24M Ceiling Mounted Built In Type FXSQ 12M 18M 24M 30M 36M 48M Ceiling Mounted Duct Type FXMQ 30M 36M 48M Ceiling Suspended Type FXHQ 12M 24M 36M Wall Mounted Type FXAQ 07M 09M 12M 18M 24M Floor Standing Type FXLQ 12M 18M 24M Concealed Floor Standing Type FXNQ 12M 18M 24M Series Model Name ...

Page 14: ...ng mounted duct type FXDQ07MVJU FXDQ09MVJU FXDQ12MVJU FXDQ18MVJU FXDQ24MVJU Floor standing type FXLQ12MVJU FXLQ18MVJU FXLQ24MVJU Ceiling mounted built in type FXSQ12MVJU FXSQ18MVJU FXSQ24MVJU FXSQ30MVJU FXSQ36MVJU FXSQ48MVJU Concealed floor standing type FXNQ12MVJU FXNQ18MVJU FXNQ24MVJU Ceiling mounted duct type FXMQ30MVJU FXMQ36MVJU FXMQ48MVJU BS Units BSVQ36MVJU BSVQ60MVJU Ceiling suspended type...

Page 15: ...Q96M Outdoor unit 2 RXYQ72M RXYQ96M RXYQ96M Total number of connectable indoor units 12 16 20 20 20 Total Capacity Index of Indoor Units to be Connected 50 5 93 5 67 5 124 5 101 187 118 218 134 5 249 5 Type Model Name Power Supply Capacity Range 0 6ton 0 8ton 1ton 1 5ton 2ton 2 5ton 3ton 4ton VJU Capacity Index 7 5 9 5 12 18 24 30 36 48 Ceiling Mounted Cassette Type Multi Flow FXFQ 12M 18M 24M 30M...

Page 16: ...SiUS39 601 Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Units 11 ...

Page 17: ...iston Displacement m3 h 13 72 10 47 Number of Revolutions r p m 6480 2900 Motor Output Number of Units kW 2 7 4 5 1 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 1 Air Flow Rate cfm 7 400 Drive Direct Drive Connecting Pipes Liquid Pipe in 3 8 in C1220T Flare Connection Gas Pipe in 3 4 in C1220T Brazing Connection Discharge Gas Pipe in Machine Weight Mass Lbs 666 3 Soun...

Page 18: ...iston Displacement m3 h 13 72 10 47 Number of Revolutions r p m 6480 2900 Motor Output Number of Units kW 2 7 4 5 1 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 1 Air Flow Rate cfm 7 400 Drive Direct Drive Connecting Pipes Liquid Pipe in 3 8 in C1220T Flare Connection Gas Pipe in 7 8 in C1220T Brazing Connection Discharge Gas Pipe in Machine Weight Mass Lbs 666 3 Soun...

Page 19: ...lacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 2 Air Flow Rate cfm 7 400 7 400 Drive Direct Drive Connecting Pipes Liquid Pipe 3 in 5 8 in C1220T Brazing Connection Main line Gas Pipe 3 in 1 1 8 in C1220T Brazing Connection Main line Oil Equalizing Pipe in φ 1 4...

Page 20: ...lacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 2 Air Flow Rate cfm 7 400 7 400 Drive Direct Drive Connecting Pipes Liquid Pipe 3 in 5 8 in C1220T Brazing Connection Main line Gas Pipe 3 in 1 1 8 in C1220T Brazing Connection Main line Oil Equalizing Pipe in φ 1 4...

Page 21: ... Type Piston Displacement m3 h 13 72 10 47 2 Number of Revolutions r p m 6480 2900 2 Motor Output Number of Units kW 2 7 4 5 2 Starting Method Direct on line Fan Type Propeller Fan Motor Output kW 0 75 2 Air Flow Rate cfm 7 400 7 400 Drive Direct Drive Connecting Pipes Liquid Pipe 3 in 5 8 in C1220T Brazing Connection Main line Gas Pipe 3 in 1 1 8 in C1220T Brazing Connection Main line Oil Equaliz...

Page 22: ...r Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes in φ1 4 Flare Connection φ1 4 Flare Connection φ3 8 Flare Connection Gas Pipes in φ1 2 Flare Connection φ1 2 Flare Connection φ5 8 Flare Connection Drain Pipe in VP25 External Dia 1 1 4...

Page 23: ...Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes in φ3 8 Flare Connection φ3 8 Flare Connection Gas Pipes in φ5 8 Flare Connection φ5 8 Flare Connect...

Page 24: ...ect Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethylene Foamed Polyethylene Foamed Polyethylene Air Filter Removal Washable Mildew Proof Removal Washable Mildew Proof Removal Washable Mildew Proof Piping Connecti...

Page 25: ...el Type Sirocco Fan Sirocco Fan Motor Output HP 0 17 0 17 Air Flow Rate H L cfm 440 350 H L 580 460 H L External Static Pressure 4 Pa 44 15 44 15 Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethylene Foamed Polyethylene Air Filter Removal...

Page 26: ...perature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant Piping Connections Liquid Pipes in φ1 4 Flare Connec...

Page 27: ...ntrol Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant Piping Connections Liquid Pipes in φ3 8 Flare Connection φ3 8 F...

Page 28: ...43 Fan Model D11 2D3AA1VE 2D11 2D3AG1VE 2D11 2D3AF1VE Type Sirocco Fan Sirocco Fan Sirocco Fan Motor Output HP 0 21 0 36 0 58 Air Flow Rate H L cfm 690 565 1 020 810 1 270 1 020 External Static Pressure 4 in Aq 0 66 0 43 0 71 0 43 1 0 0 72 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Hea...

Page 29: ... Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Wool Glass Wool Glass Wool Air Filter Resin Net with Mold Resistant Piping Connections Liquid Pipes in φ1 4 Flare Connection φ3 8 Flar...

Page 30: ...80 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Air Filter Resin Net ...

Page 31: ... 29 2 29 Fan Model QCL9686 QCL9686 Type Cross Flow Fan Cross Flow Fan Motor Output HP 0 058 0 058 Air Flow Rate H L cfm 500 400 635 470 Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Pol...

Page 32: ... Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resi...

Page 33: ...ect Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant R...

Page 34: ...SiUS39 601 Refrigerant Circuit 23 Part 3 Refrigerant Circuit 1 Refrigerant Circuit 24 1 1 RXYQ72M 96M 24 2 Functional Parts Layout 26 2 1 RXYQ72M 96M 26 3 Refrigerant Flow for Each Operation Mode 27 ...

Page 35: ... pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV compressor In order to prevent the increase of high pressure when a malfunction occurs this switch is activated at high pressure of 550 psi or more to stop the compressor operation Q S2PH HP pressure switch For STD compressor 2 S Fusible plug In order to prevent t...

Page 36: ...SiUS39 601 Refrigerant Circuit Refrigerant Circuit 25 RXYQ72M 96M 4D042651A J S U D F E I V N M G P Q B O H T K L A 9 6 8 7 2 1 4 3 ...

Page 37: ...Functional Parts Layout SiUS39 601 26 Refrigerant Circuit 2 Functional Parts Layout 2 1 RXYQ72M 96M Plan Front View ...

Page 38: ...F ON ON High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filter Filter Filter Filter Filter 5 16 Electronic expansion valve Electronic expansion valve Electronic expansion valve 4D040338A To other outdoor unit oil equalizing pipe To other outdoor unit liquid pi...

Page 39: ...High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filter Filter Filter Filter Filter 5 16 EXV Normal control EXV 200 pls EXV 200 pls 4D040338A To other outdoor unit oil equalizing pipe To other outdoor unit liquid pipe To other outdoor unit gas pipe S S S ...

Page 40: ...F ON ON High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Indoor unit operation Heat exchanger Heat exchanger Heat exchanger Fan Fan Fan Filter Filter Filter Filter Filter Filter 5 16 EXV 512 pls EXV 512 pls EXV 512 pls 4D040338A To other outdoor unit oil equalizing pipe To other outdoor unit liquid pipe To other outdoor unit gas pipe S S S ...

Page 41: ...Fan Fan Indoor unit Filter Filter Indoor unit Filter Filter Indoor unit Filter Filter EXV 200 pls EXV 200 pls EXP Normal control High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Thermostat ON Thermostat OFF 5 16 4D040338A To other outdoor unit oil equalizing pipe To other outdoor unit liquid pipe To other outdoor unit gas pipe S S S ...

Page 42: ...by 45 3 6 Stopping Operation 46 3 7 Pressure Equalization prior to Startup 48 4 Protection Control 49 4 1 High Pressure Protection Control 49 4 2 Low Pressure Protection Control 50 4 3 Discharge Pipe Protection Control 51 4 4 Inverter Protection Control 52 4 5 STD Compressor Overload Protection 53 5 Other Control 54 5 1 Outdoor Unit Rotation 54 5 2 Emergency Operation 55 5 3 Demand Operation 57 5 ...

Page 43: ...ion Compressor PI control Motorized valve PI control Protection control Indoor unit thermostat ON Defrost IN conditions are met No Yes Defrosting operation Cooling or heating operation Indoor unit thermostat ON Indoor unit stop or thermostat OFF Indoor unit stop or thermostat OFF Malfunction Standby Malfunction Standby In the event indoor unit stops or the thermostat turns OFF while in oil return ...

Page 44: ... Receiver gas charging valve SVL OFF This valve turns on when outdoor temperature is low Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Actuator Operation Remarks Compressor Compressor PI control Used for high pressure protection control low pressure protection control discharge pipe temperature protection ...

Page 45: ...Controls compressor capacity to adjust Te to achieve target value TeS Te Low pressure equivalent saturation temperature F Te setting TeS Target Te value Varies depending on Te setting operating frequency etc L M Normal factory setting H 37 5 43 48 Controls compressor capacity to adjust Tc to achieve target value TcS Tc High pressure equivalent saturation temperature F Tc setting TcS Target Tc valu...

Page 46: ... 202Hz OFF 20 210Hz OFF 21 52Hz ON 22 74Hz ON 23 96Hz ON 24 116Hz ON 25 133Hz ON 26 158Hz ON 27 177Hz ON 28 202Hz ON 29 210Hz ON Compressors are operated in the order of descending priorities Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions RXYQ96M STEP INV STD1 1 52Hz OFF 2 57Hz OFF 3 62Hz OFF 4 68Hz OFF 5 74Hz OFF 6 81Hz OFF 7 88Hz ...

Page 47: ... 27 177Hz 189Hz OFF OFF 28 202Hz 189Hz OFF OFF 29 210Hz 189Hz OFF OFF 30 52Hz 189Hz ON OFF 31 88Hz 189Hz ON OFF 32 124Hz 189Hz ON OFF 33 158Hz 189Hz ON OFF 34 189Hz 189Hz ON OFF 35 210Hz 189Hz ON OFF 36 52Hz 189Hz ON ON 37 88Hz 189Hz ON ON 38 124Hz 189Hz ON ON 39 158Hz 189Hz ON ON 40 189Hz 189Hz ON ON 41 210Hz 189Hz ON ON 42 210Hz 210Hz ON ON RXYQ144M STEP Master unit INV Slave unit INV STD unit N...

Page 48: ...F 6 81Hz OFF OFF OFF 7 88Hz OFF OFF OFF 8 96Hz OFF OFF OFF 9 104Hz OFF OFF OFF 10 110Hz OFF OFF OFF 11 116Hz OFF OFF OFF 12 124Hz OFF OFF OFF 13 133Hz OFF OFF OFF 14 143Hz OFF OFF OFF 15 158Hz OFF OFF OFF 16 165Hz OFF OFF OFF 17 177Hz OFF OFF OFF 18 189Hz OFF OFF OFF 19 202Hz OFF OFF OFF 20 210Hz OFF OFF OFF 21 52Hz 189Hz OFF OFF 22 74Hz 189Hz OFF OFF 23 96Hz 189Hz OFF OFF 24 116Hz 189Hz OFF OFF 2...

Page 49: ...ending on the discharge pipe superheated degree of inverter compressor Subcooling Motorized Valve EV2 Control Makes PI control of the motorized valve Y2E to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger SH Ts Te SH Evaporator outlet superheated degree F Ts Suction pipe temperature detected by thermistor R2T F Te Low pres...

Page 50: ...ntrol using outdoor unit fan STEP8 STEP7 STEP6 STEP5 STEP4 STEP3 STEP2 STEP1 STEP9 Pc 406 psi Pc 450 psi Pc HP pressure sensor detection value Pc 478 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc 261 psi Pc 391 psi Pc 333 psi Pc 391 psi Fan Steps RXYQ 72M 96M STEP1 0rpm STEP2 300rpm STEP3 325rpm STEP4 355rpm STEP5 400rpm STEP6 ...

Page 51: ...ON Oil equalization valve SVO ON Receiver gas charging valve SVL OFF Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Ending conditions 200 sec Pc Pe 58 psi or Actuator Operation Remarks Compressor Differential pressure control Compressor operating frequency increases by 1 step 20 sec until Pc Pe 58 psi Outdo...

Page 52: ...orized valve EV2 SH control 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Receiver gas charging valve SVL OFF OFF OFF Receiver gas discharging valve SVG OFF OFF OFF Non operating unit gas discharging valve SVSG OFF OFF OFF Non operating unit liquid pipe stop valve SVSL ON ON ON Ending conditions 2 min 6 min Ts Te 9 10 sec or Indoor unit actuator Cooling oil ret...

Page 53: ...ON OFF ON Main motorized valve EV1 SH control 0 pls 180 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Receiver gas charging valve SVL OFF OFF OFF Receiver gas discharging valve SVG OFF OFF OFF Non operating unit gas discharging valve SVSG OFF OFF OFF Non operating unit liquid pipe stop valve SVSL ON ON ON Ending conditio...

Page 54: ...9 Four way valve ON OFF ON Main motorized valve EV1 SH control 0 pls 200 pls Subcooling motorized valve EV2 0 pls 0 pls 0 pls Hot gas bypass valve SVP OFF ON ON Oil equalization valve SVO ON ON ON Receiver gas charging valve SVL OFF OFF OFF Receiver gas discharging valve SVG OFF OFF OFF Non operating unit gas discharging valve SVSG OFF OFF OFF Non operating unit liquid pipe stop valve SVSL ON ON O...

Page 55: ...ve SVL OFF Receiver gas discharging valve SVG ON Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Ending conditions 5 min Pe 72 5 psi Td 230 F or Actuator Operation Compressor 124 Hz OFF Outdoor unit fan STEP8 Four way valve ON Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP ON Oil equalization valve SV...

Page 56: ... way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO ON Receiver gas charging valve SVL OFF Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Ending conditions 5 min ...

Page 57: ...ve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO OFF Receiver gas charging valve SVL OFF Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL ON Ending conditions Indoor unit thermostat is turned ON ...

Page 58: ...discharging valve SVG OFF OFF Non operating unit liquid pipe stop valve SVSL OFF ON Mode transition conditions To Mode B when Tc Tl 0 27 Tc Ta 6 To Mode A when gas shortage signal is sent from indoor unit Ending conditions Slave units are required to operate Actuator Mode A operation Mode B operation Compressor OFF OFF Outdoor unit fan STEP2 STEP2 Four way valve ON ON Main motorized valve EV1 0 pl...

Page 59: ...TEP 4 Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Oil equalization valve SVO OFF Receiver gas charging valve SVL OFF Receiver gas discharging valve SVG OFF Non operating unit gas discharging valve SVSG OFF Non operating unit liquid pipe stop valve SVSL OFF Ending conditions 10 sec ...

Page 60: ... compressor standby for 5 mins Pc HP pressure sensor detection value for each outdoor unit When occurring 3 times within 30 min HPS is activated without high pressure standby thus outputting the malfunction code E3 INV upper limit frequency 3 step 10 sec down from current compressor frequency INV upper limit frequency 1 step 20 sec up from current compressor frequency High pressure not limited Pc ...

Page 61: ...F Slave unit Stop Pe 36 psi Pe 58 psi Pe 10 psi Pe LP pressure sensor detection value for master unit When occurring 3 times within 30 min the malfunction code E4 is output Pe 23 psi Pe 19 psi Pe 36 psi INV upper limit frequency 210 Hz Pe 10 psi Low pressure not limited Low pressure standby Low pressure limited 124Hz OFF INV upper limit frequency 1 step 20 sec up from current compressor frequency ...

Page 62: ...mp protection control not limited Discharge pipe temp control standby INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency INV62 Hz OFF HTdi 230 F Tp 239 F or Every 30 sec HTdi 275 F HTdi 239 F for 10 min or more or HTdi 221 F Tp 239 F Every 60 sec HTdi 266 F HTdi 239 F for 90 sec or more Tp 266 F or HTdi 203 ...

Page 63: ... upper limit frequency 1 step up from current compressor frequency Invertercurrent Ia Inverter current Ia continues for 3 min or more Inverter current Ib continues for 260 sec Inverter current Ic continues for 5 sec or Ia Ib Ic 25A 26 1 A 31A When occurring 3 times within 60 min the malfunction code L8 is output When occurring 3 times within 30 min the malfunction code L9 is output Not limited Tfi...

Page 64: ...ue to overcurrent to the compressor resulting from failures of STD compressor such as locking STD compressor ON CT detection current value A for more than 3 sec STD compressor OFF for 30 min Demand to operate A 28 8A When occurring 3 times within 90 minutes the malfunction code E6 is output current 30A MgS Reset OC function MgS off ...

Page 65: ... of the starting control Example The following diagram shows outdoor unit rotation in combination of 3 outdoor units Master unit and slave unit in this section are the names for installation They are determined in installation work and not changed thereafter These names are different from master unit and slave unit for control The outdoor unit connected the control wires F1 and F2 for the indoor u...

Page 66: ...ure 1 Press and hold the MODE button BS1 for 5 sec or more 2 Press the RETURN button BS3 once 3 Press the SET button BS2 one 4 Press the RETURN button BS3 twice 5 Press the MODE button BS1 once To inhibit STD1 compressors from operating Set setting mode 2 from No 19 to No 2 Procedure 1 Press and hold the MODE button BS1 for 5 sec or more 2 Press the SET button BS2 19 times 3 Press the RETURN butto...

Page 67: ...iscriminate the operating status of the master unit slave units through the following LED display To inhibit the master unit from operating Set setting mode 2 from No 38 to No 2 Procedure 1 Press and hold the MODE button BS1 for 5 sec or more 2 Press the SET button BS2 38 times 3 Press the RETURN button BS3 once 4 Press the SET button BS2 once 5 Press the RETURN button BS3 twice 6 Press the MODE b...

Page 68: ...t by external control adapter is required Demand 1 setting Demand 2 setting Other protection control functions have precedence over the above operation 5 4 Heating Operation Prohibition Heating operation is prohibited above 75 F ambient temperature Setting Standard for upper limit of power consumption Demand 1 setting 1 Approx 80 Demand 1 setting 2 factory setting Approx 70 Demand 1 setting 3 Appr...

Page 69: ...4 button 1 4 given in the figure below 6 1 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 indoor unit heat exchanger when the thermostat goes off during cooling operation 6 1 2 When the Float Switch is Tripped While Cooling OFF by Thermostat ...

Page 70: ...reset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 1 4 When the Float Switch is Tripped and AF is Displayed on the Remote Controller Note If the float switch is tripped five times in succession a drain malfunction is determined to have occurred AF is then displayed as operation continues ...

Page 71: ...et temperature Ex When cooling Assuming the preset temperature in the figure above is 75 F and the suction temperature has changed from 64 F to 86 F A F This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temperatures from 64 F to 73 F A C Remote controller th...

Page 72: ...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 75 F and the suction temperature has changed from 64 F to 82 F A D This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is us...

Page 73: ... unit enters freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below Conditions for starting freeze prevention Temperature is 30 F or less for total of 40 min or temperature is 23 F or less for total of 10 min Conditions for stopping freeze prevention Temperature is 45 F or more for 10 min continuously Ex Case where temp...

Page 74: ...est Operation 1 Test Operation 64 1 1 Procedure and Outline 64 1 2 Operation When Power is Turned On 67 2 Outdoor Unit PC Board Layout 68 3 Field Setting 69 3 1 Field Setting from Remote Controller 69 3 2 Field Setting from Outdoor Unit 81 ...

Page 75: ...rk Prior to Turn Power Supply on 1 1 2 Turn Power on Turn outdoor unit power on Carry out field setting on outdoor PC board Turn indoor unit power on V3056 Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater For field settings refer to Field Settings on and after P81 After the completion of field settings set to Setting mode 1 ...

Page 76: ...N Normal completion H2P and H3P ON Abnormal completion Check the indoor unit remote controller for abnormal display and correct it In the case of multi outdoor unit system make setting on the master unit PC board Setting with the slave unit is disabled LED display in the case of multi outdoor unit system Same as that in emergency operation Discriminate the operating status of the master unit slave...

Page 77: ...ed stop valve of outdoor unit E3 E4 F3 UF In case of RXYQ72M 96M Single outdoor installation Liquid side stop valve Open Gas side stop valve Open Oil equalizing pipe stop valve Close In case of RXYQ144M 168M 192M Multi outdoor installation Liquid side stop valve Open Gas side stop valve Open Oil equalizing pipe stop valve Open Reversed phase in power cable connection for outdoor unit U1 Change con...

Page 78: ... addition cannot be recognized In this case the unit cannot be run for up to 12 minutes to automatically set the address indoor 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 indicator blinks Returns to normal when automatic setting is complete Outdo...

Page 79: ...door Outdoor 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 DS3 HAP V3054 1 Microcomputer normal monitor This monitor blinks while in normal operation and turns on or off when a malfunction occurs 2 Set mode display LED LEDs display mode according to the setting 3 Mode setting switch ...

Page 80: ...mode push the button for 4 seconds or more and operation then enters the field set mode 2 Select the desired mode No with the button 3 During group control and you want to set by each individual indoor unit when mode No 20 21 22 23 25 has been selected push the time mode button and select the indoor unit No to be set Note This operation is not required when setting as a group 4 Push the button and...

Page 81: ...he 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 settings 6 Push the button to return to the normal mode Example When setting the filter sign time to Filter Dirtiness High in all group unit setting set the Mode No to 10 Mode setting No to 0 and setting po...

Page 82: ...r the FIELD SET MODE 3 Select the mode No 00 with BS2 BUTTON temperature setting and BS3 BUTTON temperature setting 4 Select the group No with BS9 BUTTON set A and BS10 BUTTON set B Group Nos increase in the order of 1 00 1 01 1 15 2 00 4 15 However the unified ON OFF controller displays only group No set within the range of control 5 Press BS7 BUTTON set cancel to set group No 6 Press BS6 BUTTON ...

Page 83: ...calculation Set when filter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operationoutput Malfunction output 1 ON OFF input from outside Set when ON OFF is to be controlled from outside Forced OFF ON OFF control External protection device input 2 Thermostat differenti...

Page 84: ...duct type Ceiling Suspended type Wallmounted type Floor standing type Concealed Floor standing type Multi flow FXFQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote controller thermostat sensor Set fan speed when thermostat OFF Air flow adjustment Ceiling height Air flow direction Air flow direction adjustment Down flow operation Air flow direction adjustment range Fiel...

Page 85: ...wer failure reset or the main power supply turned on again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation F2 T1 T2 Forced stop Input A Mode No Setting Switch No Setting Position No Operation b...

Page 86: ...rts high performance filter etc is installed sets to change fan speed for securing air flow rate Follow the instruction manual for the optional parts to enter the setting numbers Mode No Setting Switch No Setting Position No Setting 13 23 0 01 Wall mounted type Standard 02 Wall mounted type Slight increase 03 Wall mounted type Normal increase Mode No First code No Second code No Setting Ceiling he...

Page 87: ...ton to inspect the group No display 4 Set the group No for each group with the button The group No increases in the manner of 1 00 1 01 1 15 2 00 4 15 However the unified ON OFF controller displays only the group No within the range selected by the switch for setting each address 5 Push the timer button to define the selected group No 6 Push the button to return to the normal mode Even if not usin...

Page 88: ...ler for centralized control 1 When in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 Set mode No 00 with button 3 Set the group No for each group with button advance backward 4 Enter the selected group numbers by pushing button 5 Push button and return to the normal mode ...

Page 89: ... about 1 minute on the liquid crystal display This is not an operative fault Centoral Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 No Remote Controller Group Control by Remote Contoller autmatic unit address 1 03 1 00 1 01 Main Sub 1 02 1 04 Indoor Outdoor Outdoor Outdoor F1 F2 F1 F2 Indoor Outdoo...

Page 90: ...ation mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote controller only Cannot be turned on off by remote controller OFF control only possible by remote controller Used when you want to turn on by central remote controller only and off by remote controller onl...

Page 91: ...ol by remote controller Control mode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individual stop by central remote controller or timer stop ON OFF control impossible by remote controller Rejection Example Rejection Example Rejection Example Rejection Acceptance 0 Rejection ...

Page 92: ... change the main P C Board A1P to spare parts P C B please carry out the following setting DIP Switch Detail If the DS1 4 DS2 1 setting refrigerant classification has not been carried out error code UA is displayed and unit can not be operated DS No Item Contents DS1 1 Cool Heat change over setting ON The Cool Heat change over setting is carried out by COOL HEAT changeover remote controller fitted...

Page 93: ... RETURN BS4 TEST BS5 RESET V2760 Setting mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H1P Setting mode 2 MODE On H1P Push and hold the BS1 MODE button for 5 seconds Push the BS1 MODE button one time Normal V2761 Using the MODE button the modes can be changed as follows Check item selection SET button Contents display Monitor mode Setting mode 1 Initial condition...

Page 94: ... 7 7 7 7 During low noise operation 7 7 8 7 7 8 7 H3P to H5P LED display changes depending on setting No 2 3 4 Normal 7 7 8 7 7 7 7 During demand operation 7 7 8 7 7 7 8 H3P to H5P LED display changes depending on setting No 2 3 4 a Setting mode 1 Selection of setting items Push the SET button BS2 and set LED display to a setting item you want z Regarding setting item No 1 5 6 only the present sta...

Page 95: ...omatic nighttime low noise operation in a simple way The operating time is based on Starting set and Ending set 25 Low noise setting Sets low noise level when the low noise signal is input from outside 26 Night time low noise control starting setting Sets starting time of nighttime low noise operation Nighttime low noise setting is also required 27 Night time low noise control ending setting Sets ...

Page 96: ...ing 8 7 7 8 7 8 7 Quick defrost 8777877 Normal factory setting 8777787 Slow defrost 8777778 11 Sequential operation setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise demand YES 8777787 13 Airnet address 8 7 7 8 8 7 8 Address 0 8777777 Binary number 1 8777778 6 digits 63 8888888 18 High static pres...

Page 97: ... 4 step or lower 8777877 26 Night time low noise operation start setting 8 7 8 8 7 8 7 About 20 00 8777778 About 22 00 factory setting 8777787 About 24 00 8777877 27 Night time low noise operation end setting 8 7 8 8 7 8 8 About 6 00 8777778 About 7 00 8777787 About 8 00 factory setting 8777877 28 Power transistor check mode 8 7 8 8 8 7 7 OFF 8777778 ON 8777787 29 Capacity precedence setting 8 7 8...

Page 98: ... 8 Lower 4 digits lower 14 Contents of malfunction the latest 8 7 7 8 8 8 7 Malfunction code table Refer page 118 119 15 Contents of malfunction 1 cycle before 8 7 7 8 8 8 8 16 Contents of malfunction 2 cycle before 8 7 8 7 7 7 7 20 Contents of retry the latest 8 7 8 7 8 7 7 21 Contents of retry 1 cycle before 8 7 8 7 8 7 8 22 Contents of retry 2 cycle before 8 7 8 7 8 8 7 Number of units for sequ...

Page 99: ...r which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for No 12 and 13 respectively 0 128 In d the address for No 12 is 0101 the address for No 13 is 0110 and the combination of the two is 01010110 binary number which transla...

Page 100: ...e controllers After the check operation CHANGEOVER UNDER CONTROL is flashing in all connected remote controllers Select an indoor unit to be used as the master unit in accordance with the request from the customer It is recommended to select an indoor unit which will be used most often as the master unit Press the operation mode selector button in the remote controller of the indoor unit selected ...

Page 101: ...t Separately for Each Outdoor Unit System by Cool Heat Selector It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to OUT factory set Set cool heat switching to IND individual for Setting mode 1 factory set ...

Page 102: ...outdoor unit on either the outdoor outdoor indoor outdoor or transmission line Set outdoor unit PC board DS1 1 to Indoor factory set In setting mode 1 set the outdoor unit you want to give cool heat selection permission to as the group master and set the other outdoor units as group slave units Set the external control adapter for outdoor unit SS1 to BOTH factory set or C H and SS2 to OFF factory ...

Page 103: ...l the external control adapter for outdoor unit on either the outdoor outdoor indoor outdoor or transmission line Set group master outdoor unit PC board DS1 1 to Outdoor factory set In setting mode 1 set the outdoor unit you want to give cool heat selection permission to as the group master and set the other outdoor units as group slave units Set the external control adapter for outdoor unit SS1 t...

Page 104: ...t matches the unified cool heat address of outdoor unit PC board Address setting for e and f Set lower 5 digits with binary number No 0 to No 31 Address No Outdoor unit PCB LED Set with setting mode 2 Adapter PCB No 0 No 1 No 2 No 3 No 4 No 30 No 31 DS2 DS1 87 77777 87 77778 87 77787 87 77788 87 77877 87 88887 87 88888 0 1 2 3 4 30 31 0 1 2 3 4 30 31 8ON 7OFF Upper position ON lower position OFF T...

Page 105: ...he low noise instructions are neglected to switch to normal operation Set by Setting Mode 2 B When the low noise operation is carried out automatically at night The external control adapter for outdoor unit is not required 1 Set Night time low noise setting on the outdoor unit PC board Set by Setting Mode 2 Lower noise operation can be carried out by Mode 2 than by Mode 1 and by Mode 3 than by Mod...

Page 106: ...SiUS39 601 Field Setting Test Operation 95 Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B ...

Page 107: ...ing switch on the outdoor unit PCB to the External low noise Demand YES Set by Setting Mode 2 2 Set the Demand 1 level setting on the outdoor unit PCB as the need arises During the demand level 1 instruction the power consumption can be saved to 80 70 or 60 of the rated value respectively B When the normal demand operation is carried out Use of the external control adapter for outdoor unit is not ...

Page 108: ...emand 1 level setting Demand level 2 instructing Demand level 3 instructing The power consumption during the demand level 1 instructing can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory V3082 The power consumption set with Demand 1 level setting When the Normal demand setting is set to ON OFF has been set at factory the power consumption can be set wi...

Page 109: ... H1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Setting No you want e Push the BS3 RETURN button one time and the present setting content is displayed Push the BS2 SET button several times and match the LED display with the setting content as shown be...

Page 110: ...9 Mode 2 Factory setting z z z z 9 z Mode 3 z z z 9 z z 26 Night time low noise start setting z z z PM 8 00 z z z z z 9 PM 10 00 Factory setting z z z z 9 z PM 0 00 z z z 9 z z 27 Night time low noise end setting z z AM 6 00 z z z z z 9 AM 7 00 z z z z 9 z AM 8 00 Factory setting z z z 9 z z 29 Capacity precedence setting z z Low noise precedence Factory setting z z z z z 9 Capacity precedence z z...

Page 111: ...rant charge total flow Confirm LIQ SUCTION and Oil equalizing Stop valve closed Is all refrigerant charged Is all refrigerant charged YES YES NO NO Turn off the power Charge through Service port of LIQ Stop valve Open LIQ SUCTION Stop valve Open LIQUID Stop valve Disconnect charge hose END of charge method STOP refrigerant charge model STEP 1 Additional charge without Compressor operation Open Gas...

Page 112: ...arging operation again to start charging When the charging immediately stops even by restarting the refrigerant is charged excessively The refrigerant cannot be charged any more g Do not fail to fully open the stop valve on the liquid side as soon as disconnecting the refrigerant charging hose The piping may be burst due to the liquid sealing Operation state Compressor frequency 210Hz Y1S Y2S Y3S ...

Page 113: ...ode 2 3 2 7 Check Operation To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of motorized valv...

Page 114: ...nly during inverter operation The waveform can be checked by disconnecting the wiring of compressor After the completion of checks return the system to the previous mode and wait for 30 seconds or more until the discharge of capacitor is completed Then conduct a subsequent work Notes Be sure to disconnect the compressor wiring when conducting the check operation mentioned above When the output vol...

Page 115: ...Field Setting SiUS39 601 104 Test Operation ...

Page 116: ...door Unit Malfunction of Thermistor R2T for Heat Exchanger 131 2 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 132 2 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 133 2 12 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 134 2 13 E1 Outdoor Unit PC Board Defect 135 2 14 E3 Outdoor Unit Actuation of High Pressure Switch 136 2 15 E4 Outdoor Unit ...

Page 117: ...or Unit Reverse Phase Open Phase 174 2 43 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 175 2 44 U3 Outdoor Unit Check Operation not executed 177 2 45 U4 Malfunction of Transmission Between Indoor Units and Outdoor Units 178 2 46 U5 Indoor Unit Malfunction of Transmission Between Remote Controller and Indoor Unit 180 2 47 U7 Indoor Unit Malfunction of Transmission Between Outd...

Page 118: ...smission Between Optional Controllers for Centralized Control 203 4 4 MA Improper Combination of Optional Controllers for Centralized Control 205 4 5 MC Address Duplication Improper Setting 207 5 Troubleshooting OP Unified ON OFF Controller 208 5 1 Operation Lamp Blinks 208 5 2 Display Under Centralized Control Blinks Repeats Single Blink 210 5 3 Display Under Centralized Control Blinks Repeats Do...

Page 119: ...tion 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 once Press Inspection Test Operation button once Indoor unit settings can be made Filter sign time Air flow direction Others Following codes can be checked Malfunction codes Indoor model code Outdoor ...

Page 120: ...o malfunction the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered The malfunction code enables you to tell what kind of malfunction caused operation to stop See page 116 for malfunction code and malfunction contents ...

Page 121: ...f 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 confirmed Continuous beep No abnormality 3 Press the MODE selector button The left 0 upper digit indication of the malfunction code flashes 4 Malfunction code upper digit diagnosis Press the UP or DOWN button and chang...

Page 122: ...SiUS39 601 Troubleshooting by Remote Controller Troubleshooting 111 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed ...

Page 123: ...iling mounted duct Display A F H J L P L 6 3 Indoor unit type code Type VRV VRV Heat Recovery Display A A A A 9 6 Outdoor model code Model RXYQ M REYQ M Unit Malfunction code Inspection Normal display No display 0 L 0 Malfunction code blinks when a malfunction occurs Unit Malfunction code Inspection Inspection mode Push the button Inspection test operation Push the button Inspection test operation...

Page 124: ...or group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the settings required for each mode Modes 41 44 45 In case of Mode 44 45 push button to be able to change setting before setting work LCD code blinks For details refer to the table in next page 4 Define the setting contents Modes 44 45 Define by pushing the timer button After d...

Page 125: ...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 flow direction by each unit Select the unit No with the time mode button Set the fan speed with the button Set the air flow direction with the button 45 Unit No transfer Transfer unit No Select the unit No wit...

Page 126: ... If a malfunction occurs during operation the operation lamp malfunction code and display of malfunctioning unit No let you know the contents and location of the malfunction When there is a stop due to malfunction the contents of the malfunction given below can be diagnosed by a combination of operation lamp INSPECTION display of the liquid crystal display and display of malfunction code It also l...

Page 127: ... outdoor unit fan motor 142 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E 3E 144 F3 9 9 9 Abnormal discharge pipe temperature 146 F6 9 9 9 Refrigerant overcharged 147 H3 8 7 9 Malfunction of High pressure switch H4 9 9 9 Actuation of Low pressure switch H7 9 9 9 Abnormal outdoor fan motor signal 148 H9 9 9 9 Malfunction of thermistor R1T for outdoor air loose connection dis...

Page 128: ...sion between indoor unit and outdoor unit in the same system 184 UA 9 9 9 Excessive number of indoor units etc 186 UC 8 8 8 Address duplication of central remote controller 188 UE 9 9 9 Malfunction of transmission between central remote controller and indoor unit 189 200 UF 9 9 9 Refrigerant system not set incompatible wiring piping 191 UH 9 9 9 Malfunction of system refrigerant system address und...

Page 129: ... own system Abnormal connection with excessive number of indoor units Conflict of refrigerant type in indoor units Incorrect wiring Auto address error Malfunction of multi level converter abnormality in conflict check E3 E4 E5 E6 E7 E9 H7 H9 HC HJ HF F3 F6 J2 J3 J5 J6 J7 J8 J9 JA JC L4 L5 L8 L9 LC P1 P3 P4 PJ U0 U1 U2 U3 U4 U7 U9 UA UH UJ UF Abnormal discharge pressure Abnormal suction pressure Co...

Page 130: ...alfunction code Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Malfunction code 1st digit display section E3 E4 E5 E6 E7 E9 H7 H9 HC HJ HF F3 F6 J2 J3 J5 J6 J7 J8 J9 JA JC L4 L5 L8 L9 LC P1 P3 P4 PJ U0 U1 U2 U3 U4 U7 U9 UA UH UJ UF ...

Page 131: ...nals 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 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Indoor unit PC board replacement Actuation of external protection device Change the second code ...

Page 132: ...t be correctly received 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 supply OFF then power ON again Does the system return to normal YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Exter...

Page 133: ...Q FXSQ FXMQ FXHQ FXAQ Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF Supposed Causes 208 230V power supply is not provided Defect of float switch or short circuit connector Defect of drain pump Drain clogging upward slope etc Defect of indoor unit PC board Loose connection of co...

Page 134: ...indoor 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 is reset for the indoor unit The drain pump is connected to X25A or terminals Y1 and Y2 of the indoorunit PC board The voltage of terminals Y1 and Y2 or X25A is 208 230 V within 5minutes of resettin...

Page 135: ...when output voltage to the fan is maximum Supposed Causes Fan motor lock Disconnected or faulty wiring between fan motor and PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connect the wiring and turn on again Fix the wiring and turn on again YES NO NO NO YES YES Replace the indoor unit PC board Replace the fa...

Page 136: ...ion Utilizes ON OFF of the limit 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 of time about 30 seconds Supposed Causes Defect of swing motor Defect of connection cable power supply and limit switch Defect of air flow direction adjusting flap cam Defe...

Page 137: ...n again Replace 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 air flow direction flap s cam mechanism is disconnected from the swing motor operation is normal when turned on again The connecting cable has no continuity After turning the swing flap ON ...

Page 138: ...ng part of electronic expansion valve Defect of indoor unit PC board Defect of connecting cable Troubleshooting V2781 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred After connecting turn the power supply off and then back on Replace the moving part of the electronic expansion valve YES YES NO NO Replace the connecting cable If you tu...

Page 139: ...alve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity Approx 300Ω Continuity Approx 150Ω No continuity Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown 1 White Approx 300Ω Approx 150Ω 2 Yellow Approx 300Ω Approx 150Ω 3 Orange Approx 150Ω 4 Blue Approx 150Ω 5 Red 6 Brown ...

Page 140: ... the float switch changes from ON to OFF while the compressor is in non operation Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Defect of indoor unit PC board Modify the drain piping YES NO ...

Page 141: ...hen the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected 2 When a capacity that doesn t exist for that unit is set Supposed Causes You have forgotten to install the capacity setting adaptor Defect of indoor unit PC board Troubleshooting V2783 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may ...

Page 142: ...cted or shorted while the unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V2784 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and t...

Page 143: ...ted while the unit is running Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V2785 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and turn...

Page 144: ...nnected or shorted while the unit is running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermisto...

Page 145: ...comes disconnected or shorted while the unit is running Supposed Causes Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note In case of remote controller thermistor malfunction unit is still operable by suction air thermistor on indoor unit 1 Refer to thermistor resistance temperature characteristics table on P239 Turn power supply OFF then power ON agai...

Page 146: ... correctly received 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 outdoor unit PC board A1P Troubleshooting Turn off the power once and turn on again Return to normal YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred External factor othe...

Page 147: ...eous power failure Faulty high pressure sensor Troubleshooting 1 Actuation of high pressure switch HPS The outdoor unit PC board s connector is disconnected Is the outdoor unit heat exchanger dirty Defect of outdoor fan Is the refrigerant over charged Faulty high pressure sensor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Operatio...

Page 148: ...han 21psi Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened Troubleshooting V2791 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Low pressure at stop due to malfunction is 21psi Measure the voltage VL of X45A pin No 2 3 of outdoor PC board A2P 1 Is the relationship between low voltage and VL norma...

Page 149: ...Troubleshooting by Indication on the Remote Controller SiUS39 601 138 Troubleshooting 1 Voltage measurement point 1 Refer to pressure sensor pressure voltage characteristics table on P241 ...

Page 150: ...cted between the inverter and compressor and detects the position signal pattern Malfunction Decision Conditions The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks When the position signal in 2 times cycle is detected Supposed Causes Compressor lock High differential pressure 72psi or more In...

Page 151: ...YES Check and see whether compressor is short circuited or ground YES YES Are inverter output voltages the same for 3 phases Does low or high pressure vary even instantaneously when restarting compressor YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Open the stop valve Connect correctly Remedy the cause Replace the compressor Re...

Page 152: ...proper power voltage Faulty magnetic switch Faulty compressor Faulty current sensor A5P Troubleshooting Is the stop valve open NO Obstacle exists around the air discharge port YES Is the power supply voltage normal NO NO NO NO YES NO Is the magnetic switch K2M normal Is above wiring correct Check the wiring from power supply current sensor A5P Mgs K2M Compressor Is the current sensor correct Cauti...

Page 153: ...he system shuts down Supposed Causes Malfunction of fan motor The harness connector between fan motor and PC board is left in disconnected or faulty connector Fan does not run due to foreign matters tangled Clearing condition Operate for 5 minutes normal Troubleshooting Connector of fan motor is disconnected YES NO NO NO Harness connector between compressor inverter PCB and fan inverter PCB A2P A3...

Page 154: ...r Power supply cable YES Is the LED HAP on fan inverter PCB blinking NO Check No 9 Check on connector of fan motor Signal wire YES Are the resistance values between phases of U V W balanced Is there any short circuiting between phases of U V W NO Is the resistance value between Vcc and UVW and GND and UVW balanced NO Replace the fan inverter PCB Replace the fan motor of outdoor unit Replace the fa...

Page 155: ...rd A1P Defect of connecting cable Troubleshooting V3067 YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Return to normal Turn power supply off and turn power supply on again Electronic expansion valve is connected to X26A or X28A of outdoor unit PC board A1P Normal when coil check 1 of the moving part of the electronic expansion v...

Page 156: ...alve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity Approx 300Ω Continuity Approx 150Ω No continuity Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown 1 White Approx 300Ω Approx 150Ω 2 Yellow Approx 300Ω Approx 150Ω 3 Orange Approx 150Ω 4 Blue Approx 150Ω 5 Red 6 Brown ...

Page 157: ...e pipe temperature rises suddenly Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3068 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Discharge pipe t...

Page 158: ...receiver gas pipe temperature is lower than evaporating temperature during test operation Supposed Causes Refrigerant overcharge Disconnection of the receiver gas pipe thermistor Troubleshooting V2797 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the receiver gas pipe thermistor installed the gas relief pipe on top of receiver Is...

Page 159: ...Models RXYQ72M 96M Method of Malfunction Detection Detection of abnormal signal from fan motor Malfunction Decision Conditions In case of detection of abnormal signal at starting fan motor Supposed Causes Abnormal fan motor signal circuit malfunction Broken short or disconnection connector of fan motor connection cable Fan Inverter PC board malfunction Troubleshooting ...

Page 160: ...ndication on the Remote Controller Troubleshooting 149 1 Disconnect connector X2A and measure the following resistance X2A GND V2799 Measure the resistance between Vcc UVW and GND UVW 5 Gray Vcc W V U 4 Pink 3 Orange 2 Blue 1 Yellow ...

Page 161: ...ct of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan only is being used also 1 Refer to thermistor resistance temperature characteristics table on P239 V3070 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconn...

Page 162: ... becomes 5A or lower or 40A or more during standard compressor operation Supposed Causes Faulty current sensor Faulty outdoor unit PC board Troubleshooting V3071 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the current sensor mounted on the T phase wire Is the connector for current sensor connected to X30A X31A on outdoor unit P...

Page 163: ...Causes Defect of thermistor R31T R32T for outdoor unit discharge pipe Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan is being used also 1 Refer to thermistor resistance temperature characteristics table on P240 V3072 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal...

Page 164: ...rature thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3073 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting...

Page 165: ...at exchange thermistor is detected Supposed Causes Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3074 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting th...

Page 166: ... or open Supposed Causes Faulty receiver outlet liquid pipe thermistor R6T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R6T from outdoor unit PC board normal ...

Page 167: ...open Supposed Causes Faulty oil equalizing pipe thermistor R7T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R7T from outdoor unit PC board normal 3 5 kΩ to 36...

Page 168: ... open Supposed Causes Faulty Sub Cooling gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V3075 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R5T from outdoor unit PC board normal 3 ...

Page 169: ...posed Causes Defect of high pressure sensor system Connection of low pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting V2806 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The relationship between the 1 VH and high pressure is normal see 2 when voltage is measured between X46A pins 1 and 3 of outdo...

Page 170: ...SiUS39 601 Troubleshooting by Indication on the Remote Controller Troubleshooting 159 1 Voltage measurement point 2 Refer to pressure sensor pressure voltage characteristics table on P241 ...

Page 171: ...of high pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to pressure sensor pressure voltage characteristics table on P241 V2808 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The relationship between the 1 VH and low pressure is normal see 2 when voltage is mea...

Page 172: ... Actuation of fin thermal Actuates above 192 F Defect of inverter PC board Defect of fin thermistor Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V2811 Resistance check of the radiator fin thermistor 1 Defect of power unit radiation Intake port is clogged Radiator fin is dirty Outdoor temperature is high NO Replace the thermistor YES Abnormal Is reset p...

Page 173: ...spection Higher voltage than actual is displayed when the inverter output voltage is checked by tester V2812 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequency is stable Replace the compressor Compressor inspection In...

Page 174: ...mal Remote Controller Display L8 Applicable Models RXYQ72M 96M Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor Malfunction Decision Conditions When overload in the compressor is detected Supposed Causes Compressor overload Compressor coil disconnected Defect of inverter PC board ...

Page 175: ...ion of the compressor and refrigerant system is required Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor NO Replace the inverter PC board YES NO Reset and restart NO The secondary current of the inverter is higher than 26 1A for each phase Replace the compressor NO YES Compressor inspection The compressor s coil is ...

Page 176: ...er switch before connect or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequency is stable Unsatisfactory pressure equalization Check refrigerant system Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compr...

Page 177: ...lfunction Detection Check the communication state 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 connection between the inverter PC board and outdoor control PC board Defect of outdoor control PC board transmission section Defect of inverter PC board De...

Page 178: ... The microcomputer monitor green on the inverter P C B is blinking The voltage between 2 pins of X1A on the inverter unit is 208 230 V YES Defect of outdoor main PC board or defect of inverter PC board Check the noise filter Z1F for disconnection and check the power supply wiring or the inverter PC board Replace inverter PC board When the LC malfunction occur again replace control PC board YES The...

Page 179: ...y voltage is detected in PC board Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while the unit operation is continued P1 will be displayed by pressing the inspection button Supposed Causes Open phase Voltage imbalance between phases Defect of main circuit capacitor Defect of inverter P...

Page 180: ...y voltage record power supply voltage between 3 phases L1 L2 L2 L3 L3 L1 for about one continuous week Open phase Normalize field cause Power supply voltage imbalance Explanation for users Fix power supply voltage imbalance YES YES NO Imbalance in supplied voltage is in excess of 10 V TJU 1 Open phase When voltage monitoring is possible 1 Measure voltage at the X1M power supply terminal block 2 Me...

Page 181: ...us Malfunction is not decided while the unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Troubleshooting 1 Refer to thermistor resistance temperature characteristics table on P239 V2818 After resetting restart YES YES Is the resistance of thermistor correct 1 Is the resetting pos...

Page 182: ...t the field setting or the type of the PC board is correct through the communication date is judged Supposed Causes Faulty or no field setting after replacing main PC board Mismatching of type of PC board Troubleshooting YES Reset and then restart YES YES Note Type of PC board mismatching includes Main PC board Inverter PC board for compressor Fan driver PC board NO NO NO Caution Be sure to turn o...

Page 183: ...96M Method of Malfunction Detection Short of gas malfunction is detected by discharge pipe temperature thermistor Malfunction Decision Conditions Microcomputer judge and detect if the system is short of refrigerant Malfunction is not decided while the unit operation is continued Supposed Causes Out of gas or refrigerant system clogging incorrect piping Defect of pressure sensor Defect of outdoor u...

Page 184: ... outdoor unit PC board 1 Out of gas or refrigerant system is clogged Requires check of refrigerant system Replace the thermistor Replace the outdoor unit PC board A1P YES NO NO Out of gas closing of stop valve or refrigerant system is clogged Requires check of refrigerant system Replace main outdoor unit PC board A1P YES YES NO Cooling Low pressure is 14 5psi or less The voltage of X45A pins 2 and...

Page 185: ...Conditions When a significant phase difference is made between phases Supposed Causes Power supply reverse phase Power supply 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 section Reverse phase Counter measure of the problem is completed by phase re...

Page 186: ...XYQ72M 96M Method of Malfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the capacitor above only has a voltage of 190 V or less Supposed Causes Power supply insufficient Instantaneous failure Open phase Defect of inverter PC board Defect of outdoor control PC board Defect of K1M Main circuit wirin...

Page 187: ...ard YES NO NO Does the voltage between terminals P and N gradually rise to 283 VDC TJU after turning on Monitor field power supply Replace the inverter PC board The voltage between the P and N terminals is 190 VDC TJU or morewhen the compressor is running Is connection wire connected between the connector X21A and X6A YES NO Is 208 230 V at the connector X1A of outdoor PC board side Check the tran...

Page 188: ...ion Conditions Malfunction is decided when the unit starts operation without check operation Supposed Causes Check operation is not executed Troubleshooting V3052 Has the check operation performed on Outdoor unit P C B Press the BS4 on P C board on the outdoor unit for 5 seconds or more to execute check operation Replace the main P C board on the outdoor unit NO YES Caution Be sure to turn off pow...

Page 189: ...Malfunction Detection Microcomputer checks if transmission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Indoor to outdoor outdoor to outdoor transmission wiring F1 F2 disconnection short circuit or wrong wiring Outdoor unit power supply is OFF System address doesn t match Defect...

Page 190: ...or or outdoor outdoor unit transmission wiring YES NO NO YES Has the indoor or outdoor unit PC board been replaced or has the indoor outdoor or outdoor outdoor unit transmission wiring been modified All indoor unit remote controllers of the same refrigerant system display U4 NO Outdoor unit PC board microcomputer monitor HAP blinks NO NO NO Operation ready lamp H2P is blinking Lamp does not go off...

Page 191: ... 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 disconnect connector or parts damage may be occurred V2823 NO YES YES NO Replace indoor unit PC board Set one remote controller to SUB turn the power supply off once and then back on There is possibility of malfunction cau...

Page 192: ...or units Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Improper connection of transmission wiring between outdoor unit and external control adaptor for outdoor unit Improper cool heat selection Improper cool heat unified address outdoor unit external control adaptor for outdoor unit Defect of outdoor unit PC board A1P Def...

Page 193: ...SELECT to IND YES Fix the outdoor units multi connection transmission wiring and reset power NO Is the outdoor units multi connection transmission wiring normal Is the indoor outdoor unit transmission wiring normal NO YES Fix the indior outdoor unit transmission wiring The cool heat unified address for outdoor units in outdoor outdoor unit transmission is duplicated Set the address correctly YES N...

Page 194: ...ot 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 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2825 SS1 of both remote controllers is setto SUB Set SS1 to MAIN the power s...

Page 195: ...etection Detect the malfunction signal of any other indoor unit within the system concerned Malfunction Decision Conditions When the malfunction decision is made on any other indoor unit within the system concerned Supposed Causes Malfunction of transmission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit ...

Page 196: ...nutes or more NO YES Refer to failure diagnosis for U4 malfunction code NO YES U9 has been displayed for 2 minutes or more NO Turn on all indoor units Refer to failure diagnosis for A1 malfunction code NO YES The A1 display blinks on the remote controllers of other units within the same refrigerant system Refer to failure diagnosis for UA malfunction code YES The UA display blinks on the remote co...

Page 197: ...n A difference occurs in data by the type of refrigerant between indoor and outdoor units The number of indoor units is outside of the allowable range Malfunction Decision Conditions The malfunction decision is made as soon as either of the abnormalities aforementioned is detected Supposed Causes Excess of connected indoor units Defect of outdoor unit PC board A1P Mismatching of the refrigerant ty...

Page 198: ...door units connected to the same refrigerant system is within connectable number of unit Normal NO NO There are too many indoor units within the same refrigerant system Push and hold the RESET button on the outdoor unit PC board for 5 seconds YES Is the outdoor PC board replaced to spare parts PC board YES The setting after replacing spare PC board has not been set yet Please set as per page 73 NO...

Page 199: ...on Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized remote controller Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2828 Replace indoor unit PC board Address duplication of central remot...

Page 200: ...of Malfunction Detection 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 of time Supposed Causes Malfunction of transmission between optional controllers for centralized control and indoor unit Connector for setting master controller is disconnected Failu...

Page 201: ...d incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central remote controller Reset power supply simultaneously for all optional controllers for centralized control YES YES NO YES YES YES YES Turn indoor unit...

Page 202: ...eck 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 than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour Caution Be sure to turn off power switch before connect or disconnect connector ...

Page 203: ...ss Undefined Remote Controller Display UH Applicable Models All models of indoor units RXYQ72M 96M Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Improper connection of transmission wiring between indoor outdoor unit and outdoor outdoor unit Defect of indoor unit PC board Defect of outdoor unit PC board A1P ...

Page 204: ...first time after installation or after an indoor or outdoor unit PC board has been replaced Is indoor outdoor and outdoor outdoor unit transmission wiring normal YES Normal NO Does a malfunction occur NO Does a UH malfunction occur for all indoor units in the system YES NO Does a malfunction occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor unit...

Page 205: ...ontroller Display M1 Applicable Models Central remote controller Method of Malfunction Detection Detect an abnormality in the DIII NET polarity circuit Malfunction Decision Conditions When polarity and polarity are detected at the same time Supposed Causes Defect of central remote controller PC board Troubleshooting Replace the central remote controller ...

Page 206: ...ct the malfunction according to DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller is present at the time of the startup of slave controller When optional controllers for the centralized control which was connected once shows no response Supposed Causes Malfunction of transmission between optional controllers for centralized ...

Page 207: ...s for centralized control and replace the one that is unable to control the indoor unit NO NO Fix the wiring correctly YES YES Has a once connected optional controller for centralized control been disconnected or its address changed Turn on power supply for all optional controllers for centralized control Reset power supply simultaneously for all optional controllers for centralized control YES NO...

Page 208: ...ct the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master controller are present When the remote control adapter is present Supposed Causes Improper combination of optional controllers for centralized control More than one master controller is connected Def...

Page 209: ...so that the connector for setting master controller is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting main controller from the main controller connect to another optional controller for centralized control and simultaneously reset all optional controllers for cen...

Page 210: ...aster controller mode or slave controller mode Supposed Causes Address duplication of centralized controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Are two or more centralized remote controllers connected If the two units are both set to master controller mode or sub control mode set either of the units to mas...

Page 211: ...function Detection 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 of time Supposed Causes Malfunction of transmission between centralized controller and indoor unit Disconnection of connector for setting master controller or individual combined switching...

Page 212: ...ed incorrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the schedule timer Reset power supply simultaneously for all optional controllers for centralized control NO YES NO YES YES NO NO Turn indoor unit s power supp...

Page 213: ...ty circuit Malfunction Decision Conditions When polarity and polarity are detected at the same time Supposed Causes Defect of schedule timer PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Reset power supply Does the system return to normal YES NO External factor other than equipment malfunction noise etc Repl...

Page 214: ...e malfunction according to DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller at the time of the startup of slave controller When the optional controllers for centralized control which was connected once shows no response Supposed Causes Malfunction of transmission between optional controllers for centralized control Defect o...

Page 215: ...centralized control and replace the one that is unable to control the indoor unit NO NO Fix the wiring correctly YES YES Has a once connected optional controller for centralized control been disconnected or its address changed Turn on power supply for all optional controllers for centralized control Reset power supply simultaneously for all optional controllers for centralized control YES NO Is th...

Page 216: ...ection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master controller are present Supposed Causes Improper combination of optional controllers for centralized control More than one master controller is connected Defect of PC board of optional cont...

Page 217: ...for setting master controller when the malfunction is cleared is defective and must be replaced Reset the power supply for all optional controllers for centralized control simultaneously YES NO Is the schedule timer connected Are there two or more optional controllers for centralized control connected with the connector for setting master controller YES Is the schedule timer s individual combined ...

Page 218: ...ssion data Malfunction Decision Conditions When two or more schedule timers are connected Supposed Causes Address duplication of schedule timer Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2840 Are two or more schedule timer connected Reset the power supply for the schedule timer Disconnect all schedule timer excep...

Page 219: ...l models of 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 transmission between optional controller and indoor unit Connector for setting master controller is disconnected Defect of unified ON OFF controller Defect of indoor unit PC board Malfunction...

Page 220: ...ster controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset power supply for all optional controllers for centralized control simultaneously NO YES NO YES YES NO YES Turn the power supply of the indoor unit on YES NO NO YES NO YES NO Has a once connected ind...

Page 221: ...the centralized controller which was connected once shows no response The control ranges are overlapped When multiple master central controller are present When the schedule timer is set to individual use mode other central controller is present When the wiring adaptor for electrical appendices is present Supposed Causes Address duplication of central remote controller Improper combination of opti...

Page 222: ...or 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 supply simultaneously for all optional controllers for centralized control NO YES Has a once connected optional controller for centralized control been disconnected or itsaddress changed Is the centra...

Page 223: ...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 controller connect to another optional controller for centralized control and simultaneously reset all optional controllers for centralized control again The controller connected by the connector for se...

Page 224: ...o is not set for indoor unit Improper control range setting switch Improper wiring of transmission wiring Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2844 Is the control range setting switch set correctly Is the transmission wiring disconnected or wired incorrectly Replace the unified ON OFF controller Fix the wir...

Page 225: ...relay connector is disconnected Check No 9 Check on connector of fan motor Signal wire 1 Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected Red White Black U V W Measure the resistance ...

Page 226: ...n the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation The waveform can be checked by disconnecting the wiring of compressor After the completion of checks return the system to the previous mode and wait for 30 seconds or more until the discharge of capacitor is completed Then conduct a subsequent work Notes B...

Page 227: ...Troubleshooting OP Unified ON OFF Controller SiUS39 601 216 Troubleshooting ...

Page 228: ...iUS39 601 Replacement Procedure for INV Compressor VRV 217 Part 7 Replacement Procedure for INV Compressor VRV 1 Replacement Procedure for INV Compressor VRV RXYQ72M 96M 218 1 1 Replacement Procedure 218 ...

Page 229: ...r 8 Remove the rubber caps put on the suction and discharge pipe of the new compressor to release the sealing nitrogen gas Take note that oil may spout due to the pipe inside pressure if the plug put on the equalizing seat is removed before removing of rubber cap 9 Remove the plug put on the equalizing seat of the new compressor 10 Install the outlet pipe on the equalizing seat of the new compress...

Page 230: ...ical and Functional Parts 230 3 1 Outdoor Unit 230 3 2 Indoor Side 231 4 Option List 235 4 1 Option List of Controllers 235 4 2 Option Lists Outdoor Unit 236 5 Example of Connection 237 6 Thermistor Resistance Temperature Characteristics 239 7 Pressure Sensor 241 8 Method of Replacing The Inverter s Power Transistors and Diode Modules 242 8 1 Method of Replacing The Inverter s Power Transistors an...

Page 231: ...Piping Diagrams SiUS39 601 220 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ72M 96M ...

Page 232: ...4MVJU FXLQ 12M 18M 24MVJU FXNQ 12M 18M 24MVJU R1T Thermistor for suction air temperature R2T Thermistor for liquid line temperature R3T Thermistor for gas line temperature J DU220 602J Heat exchanger Gas piping connection port Liquid piping connection port Fan R3T R1T Electronic expansion valve Filter Filter R2T Capacity GAS Liquid 07 09 12 18M φ1 2 φ1 4 24 30 36 48M φ5 8 φ3 8 ...

Page 233: ...Piping Diagrams SiUS39 601 222 Appendix FXDQ Refrigerant pipe connection port diameters 4D043864J Model Gas Liquid FXDQ07M 09M 12M 18MVJU φ1 2 φ1 4 FXDQ24MVJU φ5 8 φ3 8 ...

Page 234: ...SiUS39 601 Wiring Diagrams for Reference Appendix 223 2 Wiring Diagrams for Reference 2 1 Outdoor Unit RXYQ72 96MTJU 3D043287C ...

Page 235: ...Wiring Diagrams for Reference SiUS39 601 224 Appendix 2 2 Field Wiring RXYQ72 96MTJU C 3D042647B ...

Page 236: ...SiUS39 601 Wiring Diagrams for Reference Appendix 225 RXYQ144 168 192MTJU C 3D050353A ...

Page 237: ...Wiring Diagrams for Reference SiUS39 601 226 Appendix 2 3 Indoor Unit FXFQ12M 18M 24M 30M 36MVJU FXDQ07M 09M 12M 18M 24MVJU 3D042620B 3D050501A ...

Page 238: ...SiUS39 601 Wiring Diagrams for Reference Appendix 227 FXSQ12M 18M 24M 30M 36M 48MVJU FXMQ30M 36M 48MVJU 3D043177A 3D043176A ...

Page 239: ...Wiring Diagrams for Reference SiUS39 601 228 Appendix FXAQ07M 09M 12M 18M 24MVJU FXHQ12M 24M 36M 3D046039C 3D048116 ...

Page 240: ...SiUS39 601 Wiring Diagrams for Reference Appendix 229 FXLQ12M 18M 24MVJU FXNQ12M 18M 24MVJU 3D045644A ...

Page 241: ...enoid valve Receiver gas discharge Y4S VPV 603D Solenoid valve Non operating unit gas discharge Y5S TEV1620DQ2 Solenoid valve Non operating unit liquid pipe close Y6S VPV 803DQ50 4 way valve Y7S VHV0404 Pressure related parts Pressure switch INV S1PH PS80 ON 551 0 21 8psi OFF 413 21 8psi Pressure switch STD1 S2PH PS80 ON 551 0 21 8psi OFF 413 21 8psi Pressure switch STD2 S3PH Fusible plug FPGD 3D ...

Page 242: ...r for Heat Exchanger High Temp R3T ST8605 3 φ8 L630 20kΩ 77 F Thermistor Heat Exchanger R2T ST8602A 3 φ6 L630 20kΩ 77 F Others Float Switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR25H25R0 Parts Name Symbol Model Remark FXDQ 07MVJU FXDQ 09MVJU FXDQ 12MVJU FXDQ 18MVJU FXDQ 24MVJU Remote Controller Wired Remote Controller BRC1C71 Option Wireless Remote Controller BRC4C82 Motors Fan Motor ...

Page 243: ...7 φ8 L1600 20kΩ 77 F Thermistor Heat Exchanger R2T ST8602A 7 φ6 L1600 20kΩ 77 F Others Float Switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR25H25R0 Parts Name Symbol Model Remark FXMQ 30MVJU FXMQ 36MVJU FXMQ 48MVJU Remote Controller Wired Remote Controller BRC1C71 Option Wireless Remote Controller BRC4C82 Motors Fan Motor M1F 1φ160W 1φ270W 1φ430W Thermal protector 275 F OFF 188 6 F ON ...

Page 244: ...Remote Controller BRC1C71 Option Wireless Remote Controller BRC7E818 Option Motors Fan Motor M1F 1φ40W 1φ43W Thermal protector 266 F OFF 176 F ON Swing Motor M1S MP24 3SB40333 1 AC200 240V MSFBC20C21 3SB40550 1 AC200 240V Thermistors Thermistor Suction Air R1T ST8601 2 φ4 L400 20kΩ 77 F Thermistor for Heat Exchanger High Temp R3T ST8605 2 φ8 L400 20kΩ 77 F Thermistor for Heat Exchanger R2T ST8602 ...

Page 245: ...mote Controller Motors Fan Motor M1F 1φ25W 1φ35W Thermal protector 275 F OFF 248 F ON Capacitor for Fan Motor C1R 0 5µF 450V 1 5µF 450V 2 0µF 450V Thermistors Thermistor Suction Air R1T ST8601 6 φ4 L1250 20kΩ 77 F Thermistor for Heat Exchanger High Temp R3T ST8605 9 φ8 L2500 20kΩ 77 F Thermistor for Heat Exchanger R2T ST8602A 9 φ6 L2500 20kΩ 77 F Others Fuse F1U AC250V 5A Transformer T1R TR25H25R0...

Page 246: ...nt Touch Controller basic Hardware intelligent Touch Controller DCS601C71 Air Conditioning management system that can be controlled by a compact all in one unit Option Software Web DCS004A71 Monitors and controls the air conditioning system using the Internet and Web browser application on a PC Communication Line 2 Interface for use in BACnet DMS502A71 Interface unit to allow communications betwee...

Page 247: ...ptional accessories Cool Heat Selector KRC19 26A Cool Heat Selector Fixing box Model KJB111A Distributive piping REFNET header Model KHRP26M22H KHRP26M33H Max 4 branch Max 8 branch KHRP26M22H KHRP26M33H KHRP26M72H Max 4 branch Max 8 branch Max 8 branch REFNET joint Model KHRP26M22T KHRP26M33T KHRP26M22T KHRP26M33T KHRP26M72TU Outdoor unit multi connection piping kit Model BHFP22M90U ...

Page 248: ...t piping size chosen by general system model name How to calculate the additional refrigerant to be charged If a negative result is gotten for R from the formula at right no refrigerant needs to be added Additional referigerant to be charged R lb R should be rounded off in units of 0 1 lb Piping between outdoor branch and outdoor unit part B Oil equalizing line part C Piping between outdoor units ...

Page 249: ...Example of Connection SiUS39 601 238 Appendix ...

Page 250: ...61 132 8 56 6 18 44 6 7 46 26 134 6 57 5 95 46 4 8 44 05 136 4 58 5 74 48 2 9 41 95 138 2 59 5 14 50 0 10 39 96 140 0 60 4 96 51 8 11 38 08 141 8 61 4 79 53 6 12 36 30 143 6 62 4 62 55 4 13 34 62 145 4 63 4 46 57 2 14 33 02 147 2 64 4 30 59 0 15 31 50 149 0 65 4 16 60 8 16 30 06 150 8 66 4 01 62 6 17 28 70 152 6 67 3 88 64 4 18 27 41 154 4 68 3 75 66 2 19 26 18 156 2 69 3 62 68 0 20 25 01 158 0 70...

Page 251: ...71 33 92 249 8 121 7 26 71 6 22 228 05 161 6 72 32 78 251 6 122 7 06 73 4 23 218 24 163 4 73 31 69 253 4 123 6 87 75 2 24 208 90 165 2 74 30 63 255 2 124 6 69 77 0 25 200 00 167 0 75 29 61 257 0 125 6 51 78 8 26 191 53 168 8 76 28 64 258 8 126 6 33 80 6 27 183 46 170 6 77 27 69 260 6 127 6 16 82 4 28 175 77 172 4 78 26 79 262 4 128 6 00 84 2 29 168 44 174 2 79 25 91 264 2 129 5 84 86 0 30 161 45 1...

Page 252: ...L PH Detected Pressure High Side PL Detected Pressure Low Side 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 VL Low pressure V Voltage V Output Voltage VH VL Detected Pressure V3053 psi 652 580 507 435 362 290 217 145 72 0 72 725 ...

Page 253: ...placing The Inverter s Power Transistors and Diode Modules Decision according to continuity check by analog tester Before checking disconnect the electric wiring connected to the power transistor and diode module Inverter PC board A1P X10A L1 P1 Electronic circuit Inverter P C Board P2 IGBT X11A U V W N L1 L2 L3 X10A DM N3 Fasten Tab P3 L2 L3 PC0208 X11A Pin U V W N P2 P1 P3 N3 V2895 ...

Page 254: ...nverter PC Board Decision If other than given above the power unit is defective and must be replaced Note If using a digital tester and continuity may be reversed Diode Module Decision If other than given above the diode module is defective and must be replaced Note If using a digital tester and continuity may be reversed ...

Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 601 244 Appendix ...

Page 256: ...SiUS39 601 Precautions for New Refrigerant R 410A 245 Part 9 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 246 1 1 Outline 246 1 2 Service Tools 248 ...

Page 257: ...gerant 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 Reference 1 MPa 10 19716 kgf cm2 1 MPa 145 psi HFC units Units using new refrigerants HCFC units Refrigerant name R 407C R 410A R 22 Composing substances Non azeotropic mixture of HFC32 HFC125 and HFC134a 1 Quasi azeotr...

Page 258: ... New Refrigerant R 410A 247 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 enthalpy kJ kg Liquid Vapor Specific entropy kJ KgK Liquid Vapor ...

Page 259: ... 22 Gauge manifold Charge hose 2Do not use the same tools for R 22 and R 410A 2Thread specification differs for R 410A and R 407C Gas detector 2The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function 2To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument Flaring tool Clutch type 2For R 410A flare gauge is necessary Torque wrench ...

Page 260: ...a pipe extension margin of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with pipe extension margin adjustment can be used Flare gauge Nominal size 1 4 3 8 1 2 5 8 3 4 Tube O D Do 6 35 9 52 12 70 15 88 19 05 Class 2 R 410A 9 1 13 2 16 6 19 7 24 0 Class 1 Conventional 9 0 13 0 ...

Page 261: ...mum 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 2 Suction port UNF7 16 20 1 4 Flare 14 6 psi 5 torr or 5000 micron or 755 mmHg UNF1 2 20 5 16 Flare with adapter Differences 2 Equipped with function to prevent reverse oil flow 2 Previous vacuum pump can be used by installing adapter Nominal size Class 1 Class 2...

Page 262: ... Since HFCs do not contain chlorine new tester detects hydrogen 5 Refrigerant oil Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long period of time Differences 2 Can be used for R 410A and R 22 units 6 Gauge manifold for R 410A Specifications 2 High pressure gauge 15 to 770 psi 76 cmHg to...

Page 263: ...ssure 3685 psi 259 kg cm2 2 Available with and without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance 8 Weigher for refrigerant charge Specifications 2 High accuracy TA101A for 10 kg cylinder 2g TA101B for 20 kg cylinder 5g 2 Equipped with pressure resistant sight glass ...

Page 264: ...nt R 410A Precautions for New Refrigerant R 410A 253 Regarding purchasing of service tools please contact following address Daikin U S Corporation Dallas Office 1645 Wallace Dr Ste 110 Carrollton TX 75006 Tel 1 972 245 1510 Fax 1 972 245 1038 ...

Page 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A ...

Page 266: ...nits Number and Capacity 4 Contents of Control Modes 79 Cool Heat Mode Switching 89 Cooling Operation Fan Control 39 Current Sensor Malfunction 151 D Defrosting Operation 43 Demand Operation 57 Diode Module 243 Discharge Pipe Protection Control 51 Display Under Centralized Control Blinks Repeats Double Blink 213 Drain Level above Limit 129 Drain Pump Control 58 E E1 135 E3 136 E4 137 E5 139 E6 141...

Page 267: ...Malfunction of Thermistor R1T for Suction Air 133 Malfunction of Thermistor R2T for Heat Exchanger 131 Malfunction of Thermistor R2T for Suction Pipe 153 Malfunction of Thermistor R3T for Gas Pipes 132 Malfunction of Thermistor R4T for Outdoor Unit Heat Exchanger Deicer 154 Malfunction of Thermostat Sensor in Remote Controller 134 Malfunction of Transmission Between Central Remote Controller and I...

Page 268: ...nit 72 Setting Modes Auto Restart after Power Failure Reset 74 Fan Speed Changeover When Thermostat is OFF 74 Filter Sign Setting 73 Ultra Long Life Filter Sign Setting 73 Setting by pushbutton switches 82 Setting of Air Flow Direction Adjustment Range 75 Special Control 40 Specifications 6 Indoor Units 11 Outdoor Units 6 Startup Control 40 Stopping Operation 46 System is not Set yet 191 T Test Op...

Page 269: ...SiUS39 601 iv Index ...

Page 270: ...s Tripped During Heating Operation 59 When the Float Switch is Tripped While Cooling OFF by Thermostat 58 When the Float Switch is Tripped While the Cooling Thermostat is ON 58 E Error of External Protection Device 120 Example of Connection 237 External ON OFF input 74 F Fan Motor M1F Lock Overload 124 Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board 171 Field S...

Page 271: ... 183 Malfunction of Transmission Between Optional Controllers for Centralized Control 195 203 Malfunction of Transmission Between Outdoor Units 181 Malfunction of Transmission Between Remote Controller and Indoor Unit 180 Method of Replacing The Inverter s Power Transistors and Diode Modules 242 Diode Module 243 Power Transistor IGBT On Inverter PC Board 243 O Operation Lamp Blinks 208 Operation o...

Page 272: ...iUS39 601 Drawings Flow Charts vii W Weigher for refrigerant charge 252 Wired Remote Controller 69 Wireless Remote Controller Indoor Unit 70 Wiring Diagrams for Reference Indoor Unit 226 Outdoor Unit 223 ...

Page 273: ...SiUS39 601 Printed in U S A 10 2006 AK This book is made of recycled paper 1645 Wallace Drive Suite 110 Carrollton TX75006 info daikinac com www daikinac com AMERICAS ...

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