Si01-501
Service Diagnosis 95
Part 6
Service Diagnosis
1. Caution for Diagnosis............................................................................96
2. Troubleshooting by Symptoms..............................................................98
3. Service Check Function ......................................................................103
4. Troubleshooting ..................................................................................106
4.1 Error Codes and Description ................................................................106
4.2 Indoor Unit PCB Abnormality ...............................................................107
4.3 Freeze-up Protection Control ...............................................................108
4.4 Fan Motor or Related Abnormality .......................................................109
4.5 Thermistor or Related Abnormality (Indoor Unit)..................................112
4.6 Signal Transmission Error (between Indoor and Outdoor Units)..........113
4.7 OL Activation (Compressor Overload) .................................................114
4.8 Compressor Lock .................................................................................115
4.9 DC Fan Lock ........................................................................................116
4.10 Input Over Current Detection ...............................................................117
4.11 Discharge Pipe Temperature Control...................................................119
4.12 High Pressure Control in Cooling .........................................................120
4.13 Position Sensor Abnormality ................................................................122
4.14 CT or Related Abnormality ...................................................................123
4.15 Thermistor or Related Abnormality (Outdoor Unit)...............................125
4.16 Electrical Box Temperature Rise..........................................................127
4.17 Radiation Fin Temperature Rise ..........................................................129
4.18 Output Over Current Detection.............................................................131
4.19 Insufficient Gas.....................................................................................133
4.20 Low-voltage Detection..........................................................................135
5. Check ..................................................................................................136
5.1 How to Check .......................................................................................136
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