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77
15.4.23 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry)
Malfunction Decision Conditions
During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by
the outdoor unit heat exchanger thermistor.
Malfunction Caused
Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow.
Outdoor heat exchanger temperature rise due to defective of outdoor fan motor.
Outdoor heat exchanger temperature rise due to defective outdoor heat exchanger thermistor.
Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB.
Troubleshooting
When abnormality indication starts again.
Check the outdoor unit installation
condition (during cooling or soft-dry
operation.
Check the outdoor heat exchanger
thermistor:
Turn off the power and disconnect the
connector of outdoor heat exhanger
thermistor from the PCB.
Measure the resistance of the outdoor
heat exchanger thermistor.
Is there any improper heat radiation?
Is the outdoor fan motor operating?
Is the measured resistance of the outdoor
heat exchanger thermistor matches the
value specified in its characteristic chart?
Reset the error code and turn on the unit
again.
Reinstall the outdoor unit.
Remove the obstacle(s).
Clean the outdoor heat exchanger.
Defect in outdoor unit PCB.
Replace the outdoor unit PCB.
Defect in outdoor heat
exchanger thermistor.
Replace the outdoor heat
exchanger thermistor.
Defect in outdoor unit PCB.
Replace the outdoor unit PCB.
Defect in outdoor fan motor.
Replace the outdoor fan motor.
Measure the AC/DC voltage between
pins of connector CN-FM outdoor unit
PCB.
Is the voltage supplied to the outdoor
fan motor normal?
For safety reason and to prevent component
breakdown, always switch off the power before
remove and connect the component.
YES
YES
YES
NO
NO (0V)
YES (240VAC / 265~325VDC)
NO
NO
Caution
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