Si30-408
Troubleshooting 67
D. Troubleshooting
D. TroubleshootingD. Troubleshooting
D. Troubleshooting
1. For Troubleshooting ..............................................................................68
2. Check Items before Troubleshooting ....................................................69
2.1 Check Items on Operation Condition (Essential Items as a Minimum) ..69
2.2 Check for Malfunction in Cooling Operation...........................................70
2.3 Check for Malfunction in Heating Operation...........................................71
3. Method of Troubleshooting ...................................................................72
3.1 Excessive / Insufficient Charging of Refrigerant.....................................72
3.2 Abnormal Judgment for Various Sensors...............................................75
3.3 Structure and Operation of Electronic Expansion Valve ........................83
3.4 Structure and Movements of Four-way Valve ........................................85
3.5 Structure and Operation of Solenoid Valve ............................................87
3.6 Structure and Operation of Two-way Solenoid Valve.............................88
3.7 Check on Outdoor Fan Motor.................................................................89
3.8 Diagnosis on Malfunction Code of Inverter System ...............................90
3.9 Diagnosis on Transmission System Malfunction....................................93
4. Malfunction Tree Analysis (FTA)...........................................................96
4.1 Actuation of Freeze-up Prevention Control of Indoor Unit......................97
4.2 Actuation of HPS in Heating Operation ..................................................98
4.3 Abnormal Discharge Pipe Temperature in Cooling Operation ...............99
4.4 Water Leakage from Indoor Unit ..........................................................100
4.5 Defective Lubrication of Compressor ...................................................101
5. List of Malfunction Code......................................................................102
6. Operating Condition Check Sheet.......................................................108
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