Daikin VRV III REYQ8PY1 Service Manual page 221

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3.26 " J3 " Outdoor Unit: Malfunction of Discharge Pipe Thermistor
(R31, 32T, 33T) ....................................................................................272
3.27 " J4 " Outdoor Unit: Malfunction of Temperature Sensor for
Heat Exchanger Gas (R2T or R11T)....................................................273
3.28 " J5 " Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for
Suction Pipe .........................................................................................274
3.29 " J6 " Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for
Outdoor Unit Heat Exchanger ..............................................................275
3.30 " J7 " Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1
(R6T), (R9T) or (R14T).........................................................................276
3.31 " J8 " Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2
(R7T or R15T) ......................................................................................277
3.32 " J9 " Outdoor Unit: Malfunction of Subcooling Heat
Exchanger Gas Pipe Thermistor (R5T or R13T) ..................................278
3.33 " JA " Outdoor Unit: Malfunction of High Pressure Sensor......................279
3.34 " JC " Outdoor Unit: Malfunction of Low Pressure Sensor ......................281
3.35 " L1 " Outdoor Unit: Defective Inverter PC Board ...................................283
3.36 " L4 " Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise.................................................................................285
3.37 " L5 " Outdoor Unit: Momentary Overcurrent of Inverter Compressor ....288
3.38 " L8 " Outdoor Unit: Momentary Overcurrent of Inverter Compressor ....290
3.39 " L9 " Outdoor Unit: Inverter Compressor Starting Failure ......................292
3.40 " LC " Outdoor Unit: Malfunction of Transmission between
Inverter and Control PC Board .............................................................295
3.41 " P1 " Outdoor Unit: Inverter Over-Ripple Protection...............................298
3.42 " P4 " Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise Sensor ....................................................................300
3.43 " PJ " Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or
Faulty Combination of PC Board..........................................................302
3.44 " U0 " Outdoor Unit: Gas Shortage Alert..................................................304
3.45 " U1 " Reverse Phase, Open Phase ........................................................306
3.46 " U2 " Outdoor Unit: Power Supply Insufficient or
Instantaneous Failure...........................................................................307
3.47 " U3 " Outdoor Unit: Check Operation not Executed ...............................310
3.48 " U4 " Malfunction of Transmission between Indoor Units.......................311
3.49 " U5 " Indoor Unit: Malfunction of Transmission between
Remote Controller and Indoor Unit.......................................................314
3.50 " U7 " Outdoor Unit: Transmission Failure (Across Outdoor Units) .........315
3.51 " U8 " Indoor Unit: Malfunction of Transmission between Main and
Sub Remote Controllers .......................................................................321
3.52 " U9 " Indoor Unit: Malfunction of Transmission between Indoor and
Outdoor Units in the Same System ......................................................322
3.53 " UA " Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller.....................................................323
3.54 " UC " Address Duplication of Centralized Controller...............................329
3.55 " UE " Malfunction of Transmission between
Centralized Controller and Indoor Unit .................................................330
3.56 " UF " System is not Set yet.....................................................................333
3.57 " UH " Malfunction of System,
Refrigerant System Address Undefined ...............................................334
Si37-701
Troubleshooting