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SiUS092230EA
110
Part 6 Service Diagnosis
1. General Problem Symptoms and Check Items .......................................112
2. Troubleshooting with LED .......................................................................113
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
4. Error Codes and Description...................................................................125
5. Troubleshooting for FTXR Series............................................................126
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. Troubleshooting for FDMQ, FFQ Series .................................................139
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
6.12 Signal Transmission Error (Between MAIN/SUB Remote Controllers) .... 156
6.13 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................. 157
7. Troubleshooting for Outdoor Unit............................................................158
7.1 Outdoor Unit PCB Abnormality................................................................. 158
7.2 Actuation of High Pressure Switch ........................................................... 159
7.3 OL Activation (Compressor Overload) or HPS Activation
7.4 OL Activation (Compressor Overload) ..................................................... 164
Part 6
Service Diagnosis
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...