discharge
temperature
protection
2. Check whether the connection is right between compressor discharge
temp. sensor and PCB.
3. Measure the resistance of discharge temperature sensor. The normal
value refers to appendix.
4. Check whether the system is blocked and whether the pressure is
normal, whether there is refrigerant leakage.
High condenser
temperature
protection
1. Check whether the outdoor ambient temperature is too high.
2. Check whether the outdoor unit is bad ventilation or the heat
exchanger is dirty.
3. Check whether the refrigerant pipe is blocked.
4. Check whether the outdoor fan motor works normally.
5. Measure the resistance of temperature sensor. The normal value
refers to appendix.
1. Check whether the compressor connections are loose.
2. Check whether the compressor is stuck or not;
3. Check whether the system is blocked and the pressure is normal.
4. Check whether the input power supply is abnormal, whether it is
lower than 140V or higher than 270V.
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