Haier · Air Conditioning
There is an electrical failure with the sensor that monitors the outdoor coil temperature during the defrost cycle. This sensor is connected to the PCB.
Click steps to track your progress.
Check that the sensor wiring is firmly and correctly connected to Plug CN-14 on the PCB.
Inspect the sensor wiring for any damage.
Test the sensor's resistance against the values in the manual's reference section.
Replace the sensor if it is found to be faulty.