Specifications

Si04-306B
Service Diagnosis 95
Part 6
Part 6Part 6
Part 6
Service Diagnosis
Service DiagnosisService Diagnosis
Service Diagnosis
1. Caution for Diagnosis............................................................................96
2. Problem Symptoms and Measures .......................................................97
3. Service Check Function ........................................................................98
4. Troubleshooting ....................................................................................99
4.1 Error Codes and Description ..................................................................99
4.2 Indoor Unit PCB Abnormality ...............................................................100
4.3 Freeze-up Protection Control or High Pressure Control.......................101
4.4 Fan Motor (DC Motor) or Related Abnormality.....................................103
4.5 Thermistor or Related Abnormality (Indoor Unit)..................................105
4.6 Signal Transmission Error (between Indoor and Outdoor Units)..........106
4.7 OL Activation (Compressor Overload) .................................................107
4.8 Compressor Lock .................................................................................108
4.9 DC Fan Lock ........................................................................................109
4.10 Input Over Current Detection ...............................................................110
4.11 Four Way Valve Abnormality................................................................112
4.12 Discharge Pipe Temperature Control...................................................114
4.13 High Pressure Control in Cooling .........................................................115
4.14 Position Sensor Abnormality ................................................................117
4.15 CT or Related Abnormality ...................................................................118
4.16 Thermistor or Related Abnormality (Outdoor Unit)...............................120
4.17 Electrical Box Temperature Rise..........................................................122
4.18 Radiation Fin Temperature Rise ..........................................................124
4.19 Output Over Current Detection.............................................................126
4.20 Insufficient Gas.....................................................................................128
4.21 Low-voltage Detection..........................................................................130
5. Check ..................................................................................................131
5.1 How to Check .......................................................................................131