High temperature protection of compressor top:
Check the air flow system
Clear up the air inlet and outlet or the heat
Yes
of indoor and outdoor units
exchanger of indoor and outdoor units.
No
Power off, then restart the unit 10
minutes later
Yes
Check if the temperature
Check the overload
No
No
Correct the connection.
of compressor
protector
Yes
Yes
Measure the resistance
between the two ports of
No
Replace the OLP.
Check refrigerant system
the OLP. Is it zero?
Yes
Yes
Replace the outdoor control PCB.
Radiator and refrigerant copper pipe
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