Daikin REYQ-XA Service Manual page 238

1. Symptom-based Troubleshooting ........................................................... 228
2. Troubleshooting with Remote Controller................................................. 233
3. Troubleshooting by Error Code ............................................................... 236
225
Service Diagnosis
1.1 Indoor Unit Overall ................................................................................... 228
1.2 With Gas Furnace .................................................................................... 231
1.3 Gas Furnace Lockout Reset..................................................................... 231
1.4 With Optional Infrared Presence/Floor Sensor......................................... 232
2.1 Wired Remote Controller.......................................................................... 233
2.2 Wireless Remote Controller ..................................................................... 234
3.1 Error Codes and Descriptions .................................................................. 236
3.2 Error Codes (Sub Codes)......................................................................... 238
3.3 External Protection Device Abnormality ................................................... 251
3.4 Indoor Unit Control PCB Abnormality....................................................... 253
3.5 Drain Level Control System Abnormality.................................................. 254
3.6 Indoor Fan Motor Lock, Overload............................................................. 256
3.7 Indoor Fan Motor Abnormality.................................................................. 258
3.8 Overload/Overcurrent/Lock of Indoor Fan Motor...................................... 262
3.9 Blower Motor Not Running ....................................................................... 263
3.10 Indoor Fan Motor Status Abnormality....................................................... 264
3.11 Low Indoor Airflow.................................................................................... 265
3.12 Swing Flap Motor Abnormality ................................................................. 266
3.13 Power Supply Voltage Abnormality .......................................................... 268
3.14 Blower Motor Stops for Over/Under Voltage ............................................ 269
3.15 Electronic Expansion Valve Coil Abnormality, Dust Clogging .................. 270
3.16 Gas Furnace Abnormality......................................................................... 271
3.17 Drain Level above Limit............................................................................ 272
3.18 Capacity Determination Device Abnormality ............................................ 273
3.19 Transmission Abnormality between Indoor Unit Control PCB and
Fan PCB................................................................................................... 274
3.20 Blower Motor Communication Error ......................................................... 276
3.21 Climate Talk Communication Error .......................................................... 277
3.22 Thermistor Abnormality ............................................................................ 278
3.23 Combination Error between Indoor Unit Control PCB and Fan PCB ....... 279
3.24 Blower Motor HP Mismatch...................................................................... 280
3.25 Indoor Blower Does Not Have Required Parameters to Function ............ 281
3.26 Remote Sensor Abnormality .................................................................... 282
3.27 Humidity Sensor System Abnormality ...................................................... 283
3.28 Infrared Presence/Floor Sensor Error ...................................................... 284
3.29 Remote Controller Thermistor Abnormality .............................................. 289
3.30 Outdoor Unit Main PCB Abnormality........................................................ 290
3.31 Detection of Ground Leakage by Leak Detection Circuit ......................... 291
SiUS371901E
Part 6
Service Diagnosis