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Home Service & Support Troubleshooting Air Conditioner F4 error code on ...

Question: F4 error code on the indoor unit display panel.

Answer:

Reason: Compressor discharging temperature protection 


Causes: 

■    Electronic expansion valve defective 

■    Faulty thermistor 

■     Faulty PCB 


Solution: Please  unplug the machine and call for service. This only can be operated by service engineers


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