Daikin REYQ-TA Series, Service Manual

Page: 169 / 324

SiUS371614E
Service Diagnosis 156
Part 6
Service Diagnosis
1. Symptom-based Troubleshooting ........................................................... 159
1.1 Indoor Unit Overall ................................................................................... 159
1.2 With Optional Infrared Presence/Floor Sensor......................................... 162
2. Service Check Function .......................................................................... 163
2.1 Wired Remote Controller .......................................................................... 163
2.2 Wireless Remote Controller ..................................................................... 165
2.3 Error Codes and Descriptions .................................................................. 167
2.4 Error Codes - Sub Codes ......................................................................... 169
3. Troubleshooting by Error Code ............................................................... 170
3.1 External Protection Device Abnormality ................................................... 170
3.2 Indoor Unit PCB Abnormality ................................................................... 172
3.3 Drain Level Control System Abnormality.................................................. 173
3.4 Fan Motor Lock, Overload........................................................................ 175
3.5 Indoor Fan Motor Abnormality .................................................................. 178
3.6 Overload/Overcurrent/Lock of Indoor Fan Motor...................................... 182
3.7 Blower Motor Not Running ....................................................................... 183
3.8 Indoor Fan Motor Status Abnormality....................................................... 184
3.9 Low Indoor Airflow.................................................................................... 185
3.10 Swing Flap Motor Abnormality ................................................................. 186
3.11 Power Supply Voltage Abnormality .......................................................... 188
3.12 Blower Motor Stops for Over/Under Voltage ............................................ 189
3.13 Electronic Expansion Valve Coil Abnormality, Dust Clogging .................. 190
3.14 Drain Level above Limit ............................................................................ 191
3.15 Capacity Determination Device Abnormality ............................................ 192
3.16 Transmission Abnormality between Indoor Unit PCB and Fan PCB ........ 193
3.17 Blower Motor Communication Error ......................................................... 195
3.18 Thermistor Abnormality ............................................................................ 196
3.19 Combination Error between Indoor Unit PCB and Fan PCB .................... 197
3.20 Blower Motor HP Mismatch...................................................................... 198
3.21 Indoor Blower Does Not Have Required Parameters to Function ............ 199
3.22 Remote Sensor Abnormality .................................................................... 200
3.23 Humidity Sensor System Abnormality ...................................................... 201
3.24 Infrared Presence/Floor Sensor Error ...................................................... 202
3.25 Remote Controller Thermistor Abnormality .............................................. 207
3.26 Outdoor Unit Main PCB Abnormality ........................................................ 208
3.27 Actuation of High Pressure Switch ........................................................... 209
3.28 Actuation of Low Pressure Sensor ........................................................... 211
3.29 Inverter Compressor Motor Lock .............................................................. 212
3.30 Compressor Damage Alarm ..................................................................... 214
3.31 Outdoor Fan Motor Abnormality ............................................................... 216
3.32 Electronic Expansion Valve Coil Abnormality........................................... 218