What is the fault code of Midea e3 air conditioner? Hangzhou air-condition maintenance

Midea's air conditioner has e3 fault due to automatic under-voltage protection. At this time, it is necessary to test the socket of the air conditioner to see if the voltage at this time is normal. If not, please repair it in time. The fault code of Midea e3 air conditioner is because the temperature around the compressor is too low, the voltage can't come up, and the protection function is started. When you encounter this fault code, you need to check whether the ambient temperature is relatively low, and you can raise the temperature appropriately. The fault code of air conditioner needs to be checked whether it is caused by the surrounding air or the system has a problem. All power supplies of the main control board can be unplugged and reconnected. If the outdoor unit can operate normally, the main control board of the indoor unit can be determined. If there is no problem, all power supplies need to be reconnected. It is also possible that there is something wrong with the connecting wire and plug of the outdoor unit. Test the voltage for faults. If there is a problem with the voltage, it may be because of the wiring.