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15.4.24 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 exchange temperature rise due to defective outdoor heat exchanger thermistor.
• Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB.
Troubleshooting
NO
YES
NO
When abnormality indication starts again
Check the outdoor unit installation condition
Is the measured resistance of the outdoor
Check the outdoor heat exchanger
Is there any improper heat radiation?
Reset the error code and turn on the unit
Reinstall the outdoor unit
Remove the obstacle(s)
Clean the outdoor heat exchanger
Is the outdoor fan motor operating?
Measure the AC/DC voltage between
pins of connector CN-FM outdoor unit
PCB
Is the voltage supplied to the outdoor
NO
Defect in outdoor heat exchanger
thermistor
Replace the outdoor heat exchanger
thermistor
NO (0V)
Defect in outdoor unit PCB
Replace the outdoor unit PCB
For safety reason and to prevent component
breakdown, always switch off the power before
remove and connect the component.
Defect in outdoor fan motor
Replace the outdoor fan motor
YES (240VAC / 265~325VDC)
Defect in outdoor unit PCB
Replace the outdoor unit PCB
YES
YES
(during cooling or soft dry operation)
again
heat exchanger thermistor
Measure the resistance of the outdoor
thermistor from the PCB
connector of outdoor heat exchanger
Turn off the power and disconnect the
thermistor:
heat exchanger thermistor matches the
value specified in its characteristic chart?
fan motor normal?
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