Midea MFE-60ARN1-RB4W Service Manual page 47

9.3.3 Phase sequence error
Phase sequence error
Change the order of the wires to power supply.
Switch on the unit again.
If the problem cannot be solved, the outdoor PCB is defective
9.3.4 High temperature protection of condenser
High temperature protection of condenser
Check the resistance of the temp. sensor
according to Appendix 1, is it normal?
Yes
Possible reason
1. Air or other gas in the refrigerant.
2. Heat exchanger is dirty
3. Outdoor fan or fan blade is defective
4. Outdoor unit is bad ventilation
5. Refrigerant is leakage
6. Outdoor PCB is defective
No
Replace the sensor
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