When abnormality indication starts again
Check the outdoor unit installation condition
(during cooling or soft dry operation)
Is there any improper heat radiation?
- Reinstall the outdoor unit
- Remove the obstacle(s)
- Clean the outdoor heat exchanger
Reset the error code and turn on the unit again
Is the outdoor fan motor operating?
If NO (Fan motor not operating):
Measure the AC/DC voltage between pins of connector CN-FM outdoor unit PCB
Is the voltage supplied to the outdoor fan motor normal?
- Defect in outdoor unit PCB
- Replace the outdoor unit PCB
YES (240VAC /
265~325VDC)
►
YES (240VAC / 265~325VDC)↓
- Defect in outdoor fan motor
- Replace the outdoor fan motor
⚠
Caution
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
If YES (Fan motor operates normally):
Check the outdoor heat exchanger thermistor:
• Turn off the power and disconnect the connector of outdoor heat exchanger thermistor from the PCB
• Measure the resistance of the outdoor heat exchanger thermistor
Is the measured resistance of the outdoor heat exchanger thermistor matches the value specified in its characteristic chart?
- Defect in outdoor heat exchanger thermistor
- Replace the outdoor heat exchanger thermistor
- Defect in outdoor unit PCB
- Replace the outdoor unit PCB
