SiEBE04-507
Service Diagnosis 81
Part 6
Service Diagnosis
1. Caution for Diagnosis............................................................................82
2. Problem Symptoms and Measures .......................................................83
3. Service Check Function ........................................................................84
4. Troubleshooting ....................................................................................87
4.1 Error Codes and Description ..................................................................87
4.2 Indoor Unit PCB Abnormality .................................................................88
4.3 Freeze-up Protection Control or High Pressure Control.........................89
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................91
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................93
4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............94
4.7 Unspecified Voltage (between Indoor and Outdoor Units) .....................95
4.8 Outdoor Unit PCB Abnormality...............................................................96
4.9 OL Activation (Compressor Overload) ...................................................97
4.10 Compressor Lock ...................................................................................98
4.11 DC Fan Lock ..........................................................................................99
4.12 Input Over Current Detection ...............................................................100
4.13 Four Way Valve Abnormality................................................................101
4.14 Discharge Pipe Temperature Control...................................................103
4.15 High Pressure Control in Cooling .........................................................104
4.16 Compressor System Sensor Abnormality ............................................106
4.17 Position Sensor Abnormality ................................................................107
4.18 DC Voltage / Current Sensor Abnormality............................................108
4.19 Thermistor or Related Abnormality (Outdoor Unit)...............................109
4.20 Electrical Box Temperature Rise..........................................................111
4.21 Radiation Fin Temperature Rise ..........................................................113
4.22 Output Over Current Detection.............................................................115
4.23 Insufficient Gas.....................................................................................117
4.24 Over-voltage Detection.........................................................................119
5. Check ..................................................................................................120
5.1 How to Check .......................................................................................120
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