E 1: compressor high pressure protection. 1. Is there an obstacle in front of the condenser? 2. Start cooling when the outdoor ambient temperature is higher than 43 degrees? 3. Is the control loop abnormal? 4, the high pressure pipe pressure is too large to make the high pressure switch action.

Generally, the fault parts where this kind of fault occurs are: the outdoor unit has poor heat dissipation, and cleaning is enough. Outdoor fan does not rotate or rotates slowly: the solution is to replace the fan and fan capacitor. High-voltage protection failure: Solution: There are too many kinds of snow, the high-voltage protector is damaged, the signal line is broken or the control panel of the indoor unit is damaged.