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13.4.24 F97 (Compressor Overheating)
Malfunction Decision Conditions
During operation of cooling, when compressor tank temperature data (112°C) is detected by the compressor tank
temperature sensor.
Malfunction Caused
Refrigerant shortage (refrigerant leakage).
2/3 way valve closed.
Detection error due to faulty compressor tank temperature sensor.
Troubleshooting
When F97 indication happens.
For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.
Replace the compressor tank
temperature sensor.
Repair the pipe flare or union nuts.
Reclaim and recharge refrigerant.
Open the 2/3 way valve.
Replace the capillary tube or dryer.
Procedure complete.
Check the compressor tank temperature
sensor.
Does it conform to the sensor
characteristic chart?
2/3 way valve closed?
Check for gas leakage.
Is Oil oozing out from the 2/3 way valve?
Capillary tube or dryer clogged?
Charge a specified amount of fresh
refrigerant.
Refrigerant cycle abnormality error
happens again?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Replace outdoor unit PCB.
Replace outdoor unit compressor.
Caution
