How to fix Mei's air-conditioning failure E3 (Midea's air-conditioning failure)

Hello everyone, Lin Fei to answer the above questions, how to repair the beautiful air conditioning fault E3, beautiful air conditioning failure many people do not know, now let's take a look!

Midea's frequency conversion air conditioner shows P1 is overvoltage or undervoltage protection. It may be that the voltage is abnormal, resulting in anti-freezing protection; it may be caused by low ambient temperature protection; it may be caused by dirty air conditioning filters or indoor heat exchangers; or it may be caused by fan and related circuit failures that lead to low air volume, thus displaying P1. The following are the specific reasons and solutions:

1. The voltage may be too high:

If the voltage is too high or too low, the indoor unit may not run, resulting in anti-freezing. In this case, it is recommended to check whether the voltage is normal.

2. It may be caused by the low environmental temperature protection:

In this case, the set temperature and indoor and outdoor ambient temperature is too low (generally less than 22 degrees), the air volume is too low, the air conditioner is protected normally, and the temperature can be lifted when the temperature rises.

3. The filter may be clogged:

Filter screen or indoor heat exchanger dirt blockage, resulting in low air volume, the system can not exchange heat in time, resulting in low indoor coil temperature. In this case, it is recommended to clean the filter or indoor heat exchanger.

4. it may be the fault of fan and related circuit:

And the failure of the fan and related circuits will lead to low air volume, the system can not exchange heat in time, resulting in the indoor coil temperature is too low. In this case, it is recommended to send after-sale maintenance.

5. This answer applies to most frequency conversion air conditioning models in the United States.

At the end of this article, I hope it will be helpful to you.