Daikin RXYQ-TA Series Service Manual page 174

4. Check ...................................................................................................... 291
161
3.33 Outdoor Fan Motor Abnormality ............................................................... 223
3.34 Electronic Expansion Valve Coil Abnormality........................................... 226
3.35 Discharge Pipe Temperature Abnormality ............................................... 228
3.36 Wet Alarm................................................................................................. 230
3.37 Refrigerant Overcharged.......................................................................... 232
3.38 Harness Abnormality (between Outdoor Unit Main PCB and
Inverter PCB)............................................................................................ 233
3.39 Outdoor Fan Motor Signal Abnormality .................................................... 234
3.40 Thermistor Abnormality ............................................................................ 235
3.41 High Pressure Sensor Abnormality .......................................................... 237
3.42 Low Pressure Sensor Abnormality ........................................................... 239
3.43 Inverter PCB Abnormality......................................................................... 241
3.44 Reactor Temperature Rise Abnormality ................................................... 243
3.45 Inverter Radiation Fin Temperature Rise Abnormality ............................. 244
3.46 Inverter Compressor Instantaneous Overcurrent ..................................... 245
3.47 Inverter Compressor Overcurrent............................................................. 247
3.48 Inverter Compressor Startup Abnormality ................................................ 249
3.49 Transmission Error between Inverter PCB and
Outdoor Unit Main PCB............................................................................ 252
3.50 Power Supply Voltage Imbalance ............................................................ 254
3.51 Reactor Temperature Abnormality ........................................................... 256
3.52 Inverter Radiation Fin Temperature Abnormality ..................................... 257
3.53 Field Setting after Replacing Outdoor Unit Main PCB Abnormality or
Combination of PCB Abnormality............................................................. 259
3.54 Refrigerant Shortage ................................................................................ 260
3.55 Reverse Phase, Open Phase................................................................... 261
3.56 Power Supply Insufficient or Instantaneous Abnormality ......................... 262
3.57 Check Operation not Executed ................................................................ 265
3.58 Transmission Error between Indoor Units and Outdoor Units.................. 266
3.59 Transmission Error between Remote Controller and Indoor Unit............. 269
3.60 Transmission Error between Outdoor Units ............................................. 270
3.61 Transmission Error between Main and Sub Remote Controllers ............. 276
3.62 Transmission Error between Indoor Unit and
Outdoor Unit in the Same System............................................................ 277
3.63 Improper Combination of Indoor Unit and Outdoor Unit,
Indoor Unit and Remote Controller........................................................... 278
3.64 Incorrect Electric Heater Capacity Setting................................................ 283
3.65 Address Duplication of Centralized Controller.......................................... 284
3.66 Transmission Error between Centralized Controller and Indoor Unit ....... 285
3.67 System not Set yet ................................................................................... 288
3.68 System Abnormality, Refrigerant System Address Undefined ................. 289
4.1 High Pressure Check ............................................................................... 291
4.2 Low Pressure Check ................................................................................ 292
4.3 Superheat Operation Check..................................................................... 293
4.4 Power Transistor Check ........................................................................... 295
4.5 Refrigerant Overcharge Check................................................................. 296
4.6 Refrigerant Shortage Check..................................................................... 297
SiUS341615E
Service Diagnosis