Si04-402A
Service Diagnosis 67
Part 6
Part 6Part 6
Part 6
Service Diagnosis
Service DiagnosisService Diagnosis
Service Diagnosis
1. Caution for Diagnosis............................................................................68
2. Problem Symptoms and Measures.......................................................69
3. Service Check Function ........................................................................70
4. Troubleshooting ....................................................................................73
4.1 Error Codes and Description ..................................................................73
4.2 Indoor Unit PCB Abnormality .................................................................74
4.3 Freeze-up Protection Control or High Pressure Control.........................75
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................77
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................79
4.6 Front Panel Open / Close Fault..............................................................80
4.7 Signal Transmission Error (between Indoor and Outdoor Unit) .............81
4.8 Signal Transmission Error
(between Indoor Unit and Wired Remote Controller ) ............................82
4.9 Unspecified Voltage (between Indoor and Outdoor Unit).......................83
4.10 Outdoor Unit PCB Abnormality...............................................................84
4.11 OL Activation (Compressor Overload) ...................................................85
4.12 Compressor Lock ...................................................................................86
4.13 DC Fan Lock ..........................................................................................87
4.14 Input Over Current Detection .................................................................88
4.15 Four Way Valve Abnormality..................................................................89
4.16 Discharge Pipe Temperature Control.....................................................91
4.17 High Pressure Control in Cooling ...........................................................92
4.18 Sensor Abnormality around Compressor System ..................................94
4.19 Position Sensor Abnormality ..................................................................95
4.20 DC Voltage / Current Sensor Abnormality..............................................96
4.21 Thermistor or Related Abnormality (Outdoor Unit).................................97
4.22 Output Over Current Detection...............................................................99
4.23 Insufficient Gas.....................................................................................101
4.24 Over-voltage Detection.........................................................................103
5. Check ..................................................................................................104
5.1 How to Check .......................................................................................104
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