Daikin RX-W Series Service Manual page 4

3. Service Diagnosis ...................................................................................116
4. Error Codes and Description...................................................................125
5. Troubleshooting for FTXR Series............................................................126
6. Troubleshooting for FDMQ, FFQ Series ................................................. 139
7. Troubleshooting for Outdoor Unit............................................................158
iii
2.1 Indoor Unit................................................................................................ 113
2.2 Outdoor Unit ............................................................................................. 115
3.1 ARC466 Series......................................................................................... 116
3.2 BRC1E73 ................................................................................................. 119
3.3 BRC082A43, BRC082A41W, BRC082A42W(S)...................................... 121
5.1 Indoor Unit PCB Abnormality ................................................................... 126
5.2 Freeze-up Protection Control/Heating Peak-cut Control .......................... 128
5.3 Indoor Fan Motor (DC Motor) or Related Abnormality ............................. 129
5.4 Thermistor or Related Abnormality........................................................... 132
5.5 Front Panel Open/Close Fault.................................................................. 133
5.6 Low-voltage Detection or Over-voltage Detection.................................... 134
5.7 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)........ 136
5.8 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................. 138
6.1 Indoor Unit PCB Abnormality ................................................................... 139
6.2 Drain Level Control System Abnormality.................................................. 140
6.3 Indoor Fan Motor or Related Abnormality ................................................ 141
6.4 Indoor Fan PCB Abnormality.................................................................... 146
6.5 Humidifier or Related Abnormality............................................................ 147
6.6 Thermistor or Related Abnormality........................................................... 148
6.7 Presence Sensor or Floor Sensor Abnormality ........................................ 149
6.8 Remote Controller Thermistor Abnormality .............................................. 150
6.9 Low-voltage Detection or Over-voltage Detection.................................... 151
6.10 Signal Transmission Error (Between Indoor and Outdoor Unit) ............... 153
6.11 Signal Transmission Error (Between Indoor Unit and
Remote Controller) ................................................................................... 155
6.12 Signal Transmission Error (Between MAIN/SUB Remote Controllers) .... 156
6.13 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................. 157
7.1 Outdoor Unit PCB Abnormality................................................................. 158
7.2 Actuation of High Pressure Switch ........................................................... 159
7.3 OL Activation (Compressor Overload) or HPS Activation
(High Pressure Switch)............................................................................. 161
7.4 OL Activation (Compressor Overload) ..................................................... 164
7.5 Compressor Lock ..................................................................................... 167
7.6 DC Fan Lock ............................................................................................ 168
7.7 Input Overcurrent Detection ..................................................................... 169
7.8 Four Way Valve Abnormality.................................................................... 171
7.9 Discharge Pipe Temperature Control....................................................... 173
7.10 High Pressure Control in Cooling ............................................................. 174
7.11 System Shutdown due to Temperature Abnormality in
the Compressor........................................................................................ 176
7.12 Compressor Sensor System Abnormality ................................................ 177
7.13 Position Sensor Abnormality .................................................................... 178
7.14 DC Voltage/Current Sensor Abnormality.................................................. 181
SiUS092230EA
Table of Contents