Daikin RXQ12AHR Service Manual page 165

SiAF341904E
6. Check ..................................................................................................287
Part 6 Service Diagnosis
5.27 Electronic Expansion Valve Coil Abnormality.......................................228
5.28 Discharge Pipe Temperature Abnormality ...........................................229
5.29 Wet Alarm.............................................................................................231
5.30 Refrigerant Overcharged......................................................................233
5.31 Harness Abnormality (between Outdoor Unit Main PCB and
Inverter PCB)........................................................................................234
5.32 Outdoor Fan PCB Abnormality.............................................................235
5.33 Thermistor Abnormality ........................................................................236
5.34 High Pressure Sensor Abnormality ......................................................238
5.35 Low Pressure Sensor Abnormality .......................................................239
5.36 Inverter PCB Abnormality.....................................................................240
5.37 Momentary Power Failure during Test Operation ................................242
5.38 Inverter Radiation Fin Temperature Rise Abnormality .........................243
5.39 Compressor Instantaneous Overcurrent ..............................................245
5.40 Compressor Overcurrent......................................................................247
5.41 Compressor Startup Abnormality .........................................................249
5.42 Transmission Error between Inverter PCB and
Outdoor Unit Main PCB........................................................................252
5.43 Power Supply Voltage Imbalance ........................................................254
5.44 Reactor Temperature Abnormality .......................................................256
5.45 Inverter Radiation Fin Temperature Abnormality .................................257
5.46 Field Setting after Replacing Outdoor Unit Main PCB Abnormality
or Combination of PCB Abnormality.....................................................259
5.47 Refrigerant Shortage Warning..............................................................260
5.48 Open Phase .........................................................................................262
5.49 Power Supply Insufficient or Instantaneous Abnormality .....................263
5.50 Check Operation Not Executed............................................................265
5.51 Transmission Error between Indoor Units and Outdoor Units..............266
5.52 Transmission Error between Remote Controller and Indoor Unit.........269
5.53 Transmission Error between Outdoor Units .........................................270
5.54 Transmission Error between Main and Sub Remote Controllers .........275
5.55 Other Indoor Units and Outdoor Unit Abnormality................................276
5.56 Improper Combination of Indoor Unit and Outdoor Unit,
Indoor Unit and Remote Controller.......................................................277
5.57 Address Duplication of Centralized Controller......................................280
5.58 Transmission Error between Centralized Controller and Indoor Unit ...281
5.59 System Not Set Yet ..............................................................................284
5.60 System Abnormality, Refrigerant System Address Undefined .............285
6.1 High Pressure Check ...........................................................................287
6.2 Low Pressure Check ............................................................................288
6.3 Superheat Operation Check.................................................................289
6.4 Power Transistor Check .......................................................................290
6.5 Refrigerant Overcharge Check.............................................................292
6.6 Refrigerant Shortage Check.................................................................293
6.7 Vacuuming and Dehydration Procedure ..............................................294
6.8 Thermistor Check .................................................................................295
6.9 Pressure Sensor Check .......................................................................298
6.10 Broken Wire Check of the Relay Wires ................................................299
6.11 Fan Motor Connector Check (Power Supply Cable) ............................301
6.12 Fan Motor Connector Check (Signal Cable) ........................................302
6.13 Electronic Expansion Valve Coil Check ...............................................303
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