Si01-406
Service Diagnosis
81
Part 6
Part 6
Part 6
Part 6
Service Diagnosis
Service Diagnosis
Service Diagnosis
Service Diagnosis
1. Troubleshooting by Lamps....................................................................82
2. Problem and Solution............................................................................83
3. Service Check Function ........................................................................84
3.1
ARC423 Series Remote Controller ........................................................84
3.2
ARC433 Series Remote Controller ........................................................85
4. Troubleshooting ....................................................................................86
4.1
Error Codes ............................................................................................86
4.2
Indoor Unit PCB Abnormality .................................................................87
4.3
Freeze-up Protection Control or High Pressure Control.........................88
4.4
Fan Motor or Related Abnormality .........................................................90
4.5
Thermistor or Related Abnormality (Indoor Unit)....................................93
4.6
Indoor Unit PCB Abnormality .................................................................94
4.7
Signal Transmission Error (between Indoor and Outdoor Units)............95
4.8
OL Activation (Compressor Overload) ...................................................96
4.9
Compressor Lock ...................................................................................97
4.10 Input Over Current Detection .................................................................98
4.11 Four Way Valve Abnormality..................................................................99
4.12 High Pressure Control in Cooling .........................................................101
4.13 CT or Related Abnormality ...................................................................103
4.14 Thermistor or Related Abnormality (Outdoor Unit)...............................105
4.15 Electrical Box Temperature Rise..........................................................107
4.16 Radiation Fin Temperature Rise ..........................................................109
4.17 Output Over Current Detection.............................................................111
4.18 Insufficient Gas.....................................................................................113
5. Check ..................................................................................................115
5.1
Fan Motor Connector Output Check ....................................................115
5.2
Four Way Valve Performance Check ...................................................115
5.3
Thermistor Resistance Check ..............................................................116
5.4
Installation Condition Check.................................................................117
5.5
Discharge Pressure Check...................................................................118
5.6
Outdoor Unit Fan System Check..........................................................119
5.7
Power Supply Waveforms Check.........................................................119
5.8
Inverter Units Refrigerant System Check .............................................120
5.9
Capacitor Voltage Check......................................................................120
5.10 Power Transistor Check .......................................................................121
5.11 Hall IC Check .......................................................................................122
5.12 Power Transistor Output Check ...........................................................123
5.13 Inverter Units Compressor / Refrigerant System Check ......................124
Summary of Contents for FT25CV1A
Page 7: ...Si01 406 vi Table of Contents...
Page 15: ...Functions Si01 406 4 List of Function...
Page 21: ...Specifications Si01 406 10 Specifications...
Page 205: ...Wiring Diagrams Si01 406 194 Appendix...
Page 209: ...Si01 406 iv Index...
