Daikin RXYQ96PYDN Service Manual page 331

4. Troubleshooting (OP: Central Remote Controller) ..................................446
5. Troubleshooting (OP: Unified ON/OFF Controller) .................................453
316
3.28 J5 Outdoor Unit: Malfunction of Thermistor (R8T or R10T) Suction Pipe. 382
3.29 J6 Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit
Heat Exchanger........................................................................................ 383
3.30 J7 Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T), (R9T) or
(R14T) ...................................................................................................... 384
3.31 J8 Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) 385
3.32 J9 Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Ther-
mistor (R5T or R13T) ............................................................................... 386
3.33 JA Outdoor Unit: Malfunction of High Pressure Sensor ............................ 387
3.34 JC Outdoor Unit: Malfunction of Low Pressure Sensor............................. 389
3.35 L1 Outdoor Unit: Defective Inverter PC Board.......................................... 391
3.36 L4 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise393
3.37 L5 Outdoor Unit: Momentary Overcurrent of Inverter Compressor........... 396
3.38 L8 Outdoor Unit: Momentary Overcurrent of Inverter Compressor........... 398
3.39 L9 Outdoor Unit: Inverter Compressor Starting Failure ............................ 400
3.40 LC Outdoor Unit: Malfunction of Transmission between Inverter and Control
PC Board.................................................................................................. 403
3.41 P1 Outdoor Unit: Inverter Over-Ripple Protection ..................................... 406
3.42 P4 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sen-
sor ............................................................................................................ 408
3.43 PJ Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty
Combination of PC Board......................................................................... 410
3.44 U0 Outdoor Unit: Gas Shortage Alert ........................................................ 412
3.45 U1 Reverse Phase, Open Phase .............................................................. 414
3.46 U2 Outdoor Unit: Power Supply Insufficient or Instantaneous Failure ...... 415
3.47 U3 Outdoor Unit: Check Operation not Executed...................................... 418
3.48 U4 Malfunction of Transmission between Indoor Units ............................. 419
3.49 U5 Indoor Unit: Malfunction of Transmission between Remote Controller and
Indoor Unit................................................................................................ 424
3.50 U7 Outdoor Unit: Transmission Failure (Across Outdoor Units)................ 425
3.51 U8 Indoor Unit: Malfunction of Transmission between Main and Sub Remote
Controllers ................................................................................................ 431
3.52 U9 Indoor Unit: Malfunction of Transmission between Indoor and Outdoor
Units in the Same System ........................................................................ 432
3.53 UA Improper Combination of Indoor and Outdoor Units, Indoor Units and Re-
mote Controller......................................................................................... 433
3.54 UC Address Duplication of Centralized Controller ..................................... 439
3.55 UE Malfunction of Transmission between Centralized Controller and Indoor
Unit ........................................................................................................... 440
3.56 UF System is not Set yet ........................................................................... 443
3.57 UH Malfunction of System, Refrigerant System Address Undefined ......... 444
4.1 M1 PC Board Defect ................................................................................. 446
4.2 M8 Malfunction of Transmission between Optional Controllers for Centralized
Control...................................................................................................... 447
4.3 MA Improper Combination of Optional Controllers for Centralized Control 449
4.4 MC Address Duplication, Improper Setting ................................................ 451
SiUS34-801A_b
Troubleshooting