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17.4.31 F97 (Compressor Over-temperature Protection)
Troubleshooting
Diagnosis Procedures and Cause
Measures to be Taken
There is a gas leak
No abnormality is observed
There is no gas leak
Disconnection/
Imperfect connection
of the connector
Check for bad connection of the compressor temperature sensor connector.
Check for presence of gas leak.
Fix the problem.
Replace the capillary tube or expansion
valve.
Replace the part from which gas is
leaking.
Higher than the
normal value
Check the gas pressure during the rated cooling operation.
Replace the compressor.
Lower than the normal value
Compressor is not
abnormally hot
Is the compressor abnormally hot when it stops?
Replace the outdoor unit control board.
Compressor is abnormally hot
An abnormality
is observed
Check for the characteristics of the compressor temperature sensor.
Refer to the characteristic table for electronic circuit diagram.
(Remove the connector and check the resistance value of the sensor.)
Replace the compressor temperature
sensor.
No abnormality is observed
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