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Si04-402A
Troubleshooting
Service Diagnosis
89
4.15
Four Way Valve Abnormality
Remote
Controller
Display
EA
Method of
Malfunction
Detection
The indoor air temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor
temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if
they function within their normal ranges in the operating mode.
Malfunction
Decision
Conditions
A following condition continues over 10 minute after operating 5 minutes.
Cooling / dry operation
(room temp. – indoor heat exchanger temp.) < –5°C
Heating
(indoor unit heat exchanger temp. – room temp.) < –5°C
Supposed
Causes
Connector in poor contact
Thermistor defective
Outdoor unit PCB defective
Four way valve coil or harness defective
Four way valve defective
Foreign substance mixed in refrigerant
Insufficient gas
Содержание FTXG25CVMAW
Страница 1: ...Inverter Pair Wall Mounted Type C Series Applied Models z z z zInverter Pair Heat Pump Si04 402A...
Страница 23: ...Printed Circuit Board Connector Wiring Diagram Si04 402A 14 Printed Circuit Board Connector Wiring Diagram...
Страница 167: ...Outdoor Unit Si04 402A 158 Removal Procedure When reassembling make sure to fit the hook Step Procedure Points...
Страница 181: ...Outdoor Unit Si04 402A 172 Removal Procedure...
Страница 185: ...Others Si04 402A 176 Others...
Страница 189: ...Wiring Diagrams Si04 402A 180 Appendix...