Daikin VRV II RXYQ5MY1B Service Manual page 169

3. Troubleshooting (OP: Central Remote Controller) ..............................236
4. Troubleshooting (OP: Schedule Timer)...............................................242
5. Troubleshooting (OP: Unified ON/OFF Controller) .............................249
158
2.31 "JC" Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor .........208
2.32 "L4" Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise...........................................................................209
2.33 "L5" Outdoor Unit: Inverter Compressor Abnormal ...............................210
2.34 "L8" Outdoor Unit: Inverter Current Abnormal.......................................211
2.35 "L9" Outdoor Unit: Inverter Start up Error..............................................212
2.36 "LC" Outdoor Unit: Malfunction of Transmission Between Inverter
and Control PC Board ..........................................................................213
2.37 "P1" Outdoor Unit: Inverter Over-Ripple Protection ...............................215
2.38 "P4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise Sensor ....................................................................216
2.39 "UO" Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................217
2.40 "U1" Reverse Phase, Open Phase.........................................................218
2.41 "U2" Power Supply Insufficient or Instantaneous Failure ......................219
2.42 "U3" Check Operation not executed ......................................................221
2.43 "U4" Malfunction of Transmission Between Indoor Units ......................222
2.44 "U5" Malfunction of Transmission Between Remote Controller
and Indoor Unit.....................................................................................224
2.45 "U7" Malfunction of Transmission Between Outdoor Units ....................225
2.46 "U8" Malfunction of Transmission Between Master and
Slave Remote Controllers ....................................................................227
2.47 "U9" Malfunction of Transmission Between Indoor and Outdoor Units
in the Same System .............................................................................228
2.48 "UA" Excessive Number of Indoor Units ................................................230
2.49 "UC" Address Duplication of Central Remote Controller ........................231
2.50 "UE" Malfunction of Transmission Between Central
Remote Controller and Indoor Unit.......................................................232
2.51 "UF" Refrigerant System not Set, Incompatible Wiring/Piping ...............234
2.52 "UH" Malfunction of System, Refrigerant System
Address Undefined...............................................................................235
3.1 "UE" Malfunction of Transmission Between Central
Remote Controller and Indoor Unit.......................................................236
3.2 "M1" PC Board Defect ............................................................................237
3.3 "M8" Malfunction of Transmission Between Optional Controllers
for Centralized Control .........................................................................238
3.4 "MA" Improper Combination of Optional Controllers
for Centralized Control .........................................................................239
3.5 "MC" Address Duplication, Improper Setting ..........................................241
4.1 "UE" Malfunction of Transmission Between Central Remote
Controller and Indoor Unit ....................................................................242
4.2 "M1" PC Board Defect ............................................................................244
4.3 "M8" Malfunction of Transmission Between Optional Controllers
for Centralized Control .........................................................................245
4.4 "MA" Improper Combination of Optional Controllers
for Centralized Control .........................................................................246
4.5 "MC" Address Duplication, Improper Setting ..........................................248
5.1 Operation Lamp Blinks .........................................................................249
SiE39-404
Troubleshooting