Part 6 Service Diagnosis - Daikin FTXS09DVJU Service Manual

SiUS04-702
1. Caution for Diagnosis............................................................................. 116
2. Problem Symptoms and Measures ........................................................ 118
3. Service Check Function ......................................................................... 119
4. Troubleshooting ..................................................................................... 122
5. Check ..................................................................................................... 170
Service Diagnosis
Service Diagnosis
4.1 Error Codes and Description ................................................................... 122
4.2 Indoor Unit PCB Abnormality .................................................................. 123
4.3 Freeze-up Protection Control or High Pressure Control.......................... 124
4.4 Fan Motor or Related Abnormality .......................................................... 126
4.5 Thermistor or Related Abnormality (Indoor Unit)..................................... 129
4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............. 130
4.7 OL Activation (Compressor Overload) .................................................... 132
4.8 Compressor Lock .................................................................................... 133
4.9 DC Fan Lock ........................................................................................... 135
4.10 Input Over Current Detection .................................................................. 136
4.11 Four Way Valve Abnormality................................................................... 139
4.12 Discharge Pipe Temperature Control...................................................... 143
4.13 High Pressure Control in Cooling ............................................................ 145
4.14 Position Sensor Abnormality ................................................................... 149
4.15 DC Voltage / Current Sensor Abnormality............................................... 151
4.16 CT or Related Abnormality ...................................................................... 152
4.17 Thermistor or Related Abnormality (Outdoor Unit).................................. 154
4.18 Electrical Box Temperature Rise............................................................. 156
4.19 Radiation Fin Temperature Rise ............................................................. 158
4.20 Output Over Current Detection................................................................ 160
4.21 Insufficient Gas........................................................................................ 164
4.22 Over-voltage Detection............................................................................ 168
4.23 Low-voltage Detection............................................................................. 169
5.1 How to Check .......................................................................................... 170
Part 6
115