What is the reason why the car air conditioner doesn't cool when it is hot at noon?

The failure of automobile air conditioner to cool at high temperature at noon may be the cause of fluorine deficiency, poor heat dissipation and compressor failure. Details are as follows: 1. Fluorine deficiency: Fluorine deficiency is normal. It's not that the air conditioner is not good, nor is it completely uncooled, but the effect is not good, but this situation should be less. Because fluorine is not a consumable, fluorine will not be consumed by itself as long as there is no serious rear-end accident or the removal of air conditioning pipes and other accessories affecting the sealing performance. 2. Poor heat dissipation: Water tank and condenser are important heat dissipation devices for vehicles. If it is too dirty and the heat dissipation is not good, it will not only cause the engine temperature to be too high, but also directly affect the refrigeration effect of the air conditioner. Therefore, when you feel that the effect of using air conditioning in hot weather is not ideal, you should first consider whether you have cleaned the cooling system of the vehicle. 3. Compressor failure: If there is a problem with the compressor, the air conditioner will not work. The compressor does not work due to the damaged or defective capacitor of the compressor, which means that both internal and external machines work, but the compressor does not work. The air conditioner has no effect, and the compressor will be very hot.