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Voltage is too low or too high
The terminal wire loose
Compressor stops working for
protection:
1. over-current protection
2. over-heat protection
3. Voltage protection
4. Overloaded protection
5. Locked-rotor protection
System pressure protection
Compressor on and off
frequently
Compressor Speed abnormal
Compressor fail to start
Voltage checking
Terminal checking
1. System overloaded
2. System overheated
3. Voltage too low or too high
4. Compressor rotor-locked
Check if condenser is blocked?
the fan works?
Refrigerant leaking?
Check if temperature probe is
normal
Check Controller
Check controller & compressor
steady voltage
Fastness
Keep ventilation & Steady Voltage
Clean Condenser or change fan motor,
find the leaking, refill refrigerant.
Change
Change
Change
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