Si04-306
Service Diagnosis 89
Part 6
Part 6Part 6
Part 6
Service Diagnosis
Service DiagnosisService Diagnosis
Service Diagnosis
1. Caution for Diagnosis............................................................................90
2. Problem Symptoms and Measures .......................................................91
3. Service Check Function ........................................................................92
4. Troubleshooting ....................................................................................93
4.1 Error Codes and Description ..................................................................93
4.2 Indoor Unit PCB Abnormality .................................................................94
4.3 Freeze-up Protection Control or High Pressure Control.........................95
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................97
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................99
4.6 Signal Transmission Error (between Indoor and Outdoor Units)..........100
4.7 OL Activation (Compressor Overload) .................................................101
4.8 Compressor Lock .................................................................................102
4.9 DC Fan Lock ........................................................................................103
4.10 Input Over Current Detection ...............................................................104
4.11 Four Way Valve Abnormality................................................................106
4.12 Discharge Pipe Temperature Control...................................................108
4.13 Position Sensor Abnormality ................................................................109
4.14 CT or Related Abnormality ...................................................................110
4.15 Thermistor or Related Abnormality (Outdoor Unit)...............................112
4.16 Electrical Box Temperature Rise..........................................................114
4.17 Radiation Fin Temperature Rise ..........................................................116
4.18 Output Over Current Detection.............................................................118
4.19 Insufficient Gas.....................................................................................120
4.20 Low-voltage Detection..........................................................................122
4.21 High Pressure Control in Cooling .........................................................123
5. Check ..................................................................................................125
5.1 How to Check .......................................................................................125
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