1 E 1 outdoor unit is defective.
2.E3 high voltage switch action.
3.E4 low-voltage sensor works normally.
4.E9 electronic expansion valve drive component is faulty.
5.F6 refrigerant is overfilled.
6.H9 outdoor air thermistor (R 1T) is faulty.
7.JBOY3 exhaust pipe thermistor (R3 1~33T) is faulty.
8. The thermistor (R2T) of 8.J5 suction pipe is faulty.
9.9 thermistor (R4T). J6 heat exchanger is faulty.