Daikin VRV II RXYQ5MATL Service Manual page 163

4. Troubleshooting (OP: Central Remote Controller) ..............................233
5. Troubleshooting (OP: Schedule Timer)...............................................238
152
3.29 "J9" Outdoor Unit: Malfunction of Subcooling Heat Exchanger
Gas Pipe Thermistor (R5T) ..................................................................203
3.30 "JA" Outdoor Unit: Malfunction of High Pressure Sensor......................204
3.31 "JC" Outdoor Unit: Malfunction of Low Pressure Sensor.......................205
3.32 "L4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise.................................................................................206
3.33 "L5" Outdoor Unit: Inverter Compressor Abnormal ...............................207
3.34 "L8" Outdoor Unit: Inverter Current Abnormal.......................................208
3.35 "L9" Outdoor Unit: Inverter Start up Error..............................................209
3.36 "LC" Outdoor Unit: Malfunction of Transmission Between
Inverter and Control PC Board .............................................................210
3.37 "P1" Outdoor Unit: Inverter Over-Ripple Protection ...............................212
3.38 "P4" Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise Sensor ....................................................................213
3.39 "UO" Outdoor Unit: Low Pressure Drop Due to Refrigerant
Shortage or Electronic Expansion Valve Failure ..................................214
3.40 "U1" Reverse Phase, Open Phase.........................................................215
3.41 "U2" Outdoor Unit: Power Supply Insufficient or
Instantaneous Failure...........................................................................216
3.42 "U3" Outdoor Unit: Check Operation not executed................................218
3.43 "U4" Malfunction of Transmission Between Indoor Units ......................219
3.44 "U5" Indoor Unit: Malfunction of Transmission Between
Remote Controller and Indoor Unit.......................................................221
3.45 "U7" Indoor Unit: Malfunction of Transmission Between
Outdoor Units .......................................................................................222
3.46 "U8" Indoor Unit: Malfunction of Transmission Between
Main and Sub Remote Controllers .......................................................224
3.47 "U9" Indoor Unit: Malfunction of Transmission Between
Indoor and Outdoor Units in the Same System....................................225
3.48 "UA" Improper Combination of Indoor and Outdoor Units,
Indoor Units and Remote Controller.....................................................227
3.49 "UC" Address Duplication of Centralized Controller ...............................228
3.50 "UE" Malfunction of Transmission Between Centralized
Controller and Indoor Unit ....................................................................229
3.51 "UF" System is not Set yet .....................................................................231
3.52 "UH" Malfunction of System, Refrigerant System Address Undefined...232
4.1 "M1" PC Board Defect ............................................................................233
4.2 "M8" Malfunction of Transmission Between Optional
Controllers for Centralized Control .......................................................234
4.3 "MA" Improper Combination of Optional Controllers for
Centralized Control...............................................................................235
4.4 "MC" Address Duplication, Improper Setting ..........................................237
5.1 "UE" Malfunction of Transmission Between Centralized
Controller and Indoor Unit ....................................................................238
5.2 "M1" PC Board Defect ............................................................................240
5.3 "M8" Malfunction of Transmission Between Optional
Controllers for Centralized Control .......................................................241
5.4 "MA" Improper Combination of Optional Controllers for
Centralized Control...............................................................................242
5.5 "MC" Address Duplication, Improper Setting ..........................................244
Si39-504
Troubleshooting