PACD011001C2
vi Table of Contents
2.4 Operation of The Remote Controller’s Inspection /
Test Operation Button ..........................................................................339
2.5 Remote Controller Service Mode .........................................................340
2.6 Remote Controller Self-Diagnosis Function
(Display of Malfunction Code) ..............................................................342
3. Troubleshooting ..................................................................................344
3.1 Indoor Unit: Error of External Protection Device ..................................344
3.2 Indoor Unit: PC Board Defect...............................................................345
3.3 Indoor Unit: Malfunction of Drain Level Control System (33H).............346
3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload......................................347
3.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)............................348
3.6 Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................349
3.7 Indoor Unit: Drain Level above Limit ....................................................350
3.8 Indoor Unit: Malfunction of Capacity Determination Device.................351
3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe...............352
3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ................353
3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....................354
3.12 Indoor Unit: Malfunction of Thermostat Sensor
in Remote Controller ............................................................................355
3.13 Outdoor Unit: Actuation of Safety Device.............................................356
3.14 Outdoor Unit: PC Board Defect............................................................357
3.15 Outdoor Unit: Actuation of High Pressure Switch.................................358
3.16 Outdoor Unit: Actuation of Low Pressure Switch .................................359
3.17 Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................360
3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature.........................361
3.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air............362
3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)...........363
3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe..........364
3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ....365
3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor ...........366
3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor................367
3.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T) .........368
3.26 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................369
3.27 Negative Phase, Open Phase..............................................................370
3.28 Malfunction of Transmission Between Indoor Units .............................371
3.29 Malfunction of Transmission
Between Remote Controller and Indoor Unit........................................372
3.30 Malfunction of Transmission Between Outdoor Units ..........................373
3.31 Malfunction of Transmission
Between Master and Slave Remote Controllers ..................................374
3.32 Malfunction of Transmission
Between Indoor and Outdoor Units in the Same System.....................375
3.33 Excessive Number of Indoor Units.......................................................376
3.34 Address Duplication of Central Remote Controller...............................377
3.35 Refrigerant System not set, Incompatible Wiring/Piping ......................378
3.36 Malfunction of System, Refrigerant System Address Undefined..........379
4. Failure Diagnosis for Inverter System.................................................380
4.1 Points of Diagnosis...............................................................................380
4.2 How to use the Monitor Switch on the Inverter PC Board....................381
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