Service manual

Si06-305
Service Diagnosis 69
Part 6
Part 6Part 6
Part 6
Service Diagnosis
Service DiagnosisService Diagnosis
Service Diagnosis
1. Caution for Diagnosis............................................................................70
2. Problem Symptoms and Measures .......................................................71
3. Service Check Function ........................................................................72
3.1 ARC433 Series.......................................................................................72
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 Shutter Drive Motor / Shutter Limit Switch Abnormality .........................80
4.7 Signal Transmission Error (between Indoor and Outdoor Units)............81
4.8 OL Activation (Compressor Overload) ...................................................82
4.9 Compressor Lock ...................................................................................83
4.10 Input Over Current Detection .................................................................84
4.11 Four Way Valve Abnormality..................................................................85
4.12 Discharge Pipe Temperature Control.....................................................87
4.13 Position Sensor Abnormality ..................................................................88
4.14 CT or Related Abnormality .....................................................................89
4.15 Thermistor or Related Abnormality (Outdoor Unit).................................91
4.16 Electrical Box Temperature Rise............................................................93
4.17 Radiation Fin Temperature Rise ............................................................95
4.18 Output Over Current Detection...............................................................97
4.19 Insufficient Gas.......................................................................................99
4.20 Over-voltage Detection.........................................................................101
4.21 High Pressure Control in Cooling .........................................................102
5. Checks ................................................................................................104
5.1 How to Check .......................................................................................104