Haier · Air Conditioning
This protection activates when the compressor discharge temperature exceeds 110°C. It can be caused by refrigerant issues, faulty sensors, or electronic expansion valve problems.
Click steps to track your progress.
Turn off the power, then restart the air conditioner.
Measure the temperature at the compressor's exhaust sensor after startup.
If the temperature exceeds 110°C shortly after startup, suspect a refrigerant leak or high system load.
If malfunctions occur after running, but the measured temperature is below 110°C, the discharge sensor may be faulty and need replacement.