Daikin REYQ8-48PY1B - Page 5

SiBE37-701_B
Table of Contents iv
3.34 “
J8
” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2
(R7T or R15T) ......................................................................................312
3.35 “
J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger
Gas Pipe Thermistor (R5T or R13T) ....................................................313
3.36 “
JA” Outdoor Unit: Malfunction of High Pressure Sensor......................314
3.37 “
JC” Outdoor Unit: Malfunction of Low Pressure Sensor ......................316
3.38 “
L1
” Outdoor Unit: Malfunction of Inverter PCB ....................................318
3.39 “
L4” Outdoor Unit: Malfunction of Inverter Radiation Fin
Temperature Rise.................................................................................320
3.40 “L5
” Outdoor Unit: Momentary Overcurrent of
Inverter Compressor.............................................................................323
3.41 “
L8” Outdoor Unit: Momentary Overcurrent of
Inverter Compressor.............................................................................325
3.42 “
L9” Outdoor Unit: Inverter Compressor Starting Failure ......................327
3.43 “
LC” Outdoor Unit: Malfunction of Transmission between
Inverter and Control PCB .....................................................................330
3.44 “
P1” Outdoor Unit: Inverter Over-Ripple Protection...............................333
3.45 “
P4
” Outdoor Unit: Malfunction of Inverter Radiation Fin
Temperature Rise Sensor ....................................................................335
3.46 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main
PCB or Faulty Combination of PCB .....................................................337
3.47 “
U0
” Outdoor Unit: Refrigerant Shortage Alert ......................................339
3.48 “
U1
” Reverse Phase, Open Phase ........................................................341
3.49 “
U2” Outdoor Unit: Power Supply Insufficient or
Instantaneous Failure...........................................................................342
3.50 “
U3
” Outdoor Unit: Check Operation is not Executed............................345
3.51 “
U4
” Malfunction of Transmission between Indoor Units and
Outdoor Units .......................................................................................346
3.52 “U5
” Indoor Unit: Malfunction of Transmission between
Remote Controller and Indoor Unit.......................................................349
3.53 “
U7
” Outdoor Unit: Transmission Failure (Across Outdoor Units) .........350
3.54 “
U8
” Indoor Unit: Malfunction of Transmission between Main and
Sub Remote Controllers .......................................................................356
3.55 “
U9
” Indoor Unit: Malfunction of Transmission between Indoor and
Outdoor Units in the Same System ......................................................357
3.56 “UA
” Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller.....................................................358
3.57 “UC
” Address Duplication of Centralized Controller...............................364
3.58 “
UE
” Malfunction of Transmission between Centralized
Controller and Indoor Unit ....................................................................365
3.59 “UF
” System is not Set yet.....................................................................368
3.60 “
UH
” Malfunction of System,
Refrigerant System Address Undefined ...............................................369
4. Troubleshooting (OP: Centralized Remote Controller) .......................371
4.1 “
M1
” PCB Defect ...................................................................................371
4.2 “
M8
” Malfunction of Transmission between Optional Controllers for
Centralized Control...............................................................................372
4.3 “
MA
” Improper Combination of Optional Controllers for
Centralized Control...............................................................................373
4.4 “MC
” Address Duplication, Improper Setting .........................................375
5. Troubleshooting (OP: Unified ON/OFF Controller) .............................376
5.1 Operation Lamp Blinks .........................................................................376