Midea's air conditioner does not cool, but the windy outdoor unit does not start. What happened? Changsha air-condition maintenance

Midea air conditioner will not cool if there is not enough freon. In addition, if the voltage at home is unstable, the filter screen is aging and has not been cleaned for a long time, and the control panel of the internal and external machines of the air conditioner fails, the air conditioner will not cool. 1. When the service life of the air conditioner reaches 3 to 5 years, there may be insufficient freon in the air conditioner at this time, resulting in the air conditioner being unable to cool. Of course, apart from not being particularly cold, it is sometimes accompanied by water leakage. 2. Generally, when the weather is hot and cold, the utilization rate of air conditioning is relatively high. At this time, air conditioners will be used door to door in the community at the same time, which may lead to unstable voltage in the community. When the voltage is unstable, the work of our air conditioner will be disturbed and there will be no refrigeration. 3. Some customers didn't clean the dust filter inside the air conditioner after using the air conditioner for a long time because of lack of common sense, which caused a lot of dust to accumulate in the filter. These dust piles together will affect the heat dissipation capacity of the air conditioner, which will naturally lead to the air conditioner not cooling. 4. If the air conditioner does not cool, it does not belong to the above three situations. It may be that the control panel of the internal unit or the external unit of the air conditioner has failed. At this time, you need to contact a professional master to repair the control panel or replace it with a new one.