What is the reason why the automobile compressor doesn't work and the air conditioner doesn't cool?

The reasons why the automobile compressor doesn't work and the air doesn't cool are: lack of refrigerant: generally, the refrigerant seeds are added to the automobile air conditioner once every 2-3 years, and some cars even add them once a year. Even if the air conditioner is tightly sealed, it can't resist the diffusion of refrigerant, and there is a slight leakage in the air conditioning pipeline or condenser. Damage to flippers: The failure of the empty flap motor is rare, but it is not unheard of. This is very troublesome when the flap motor fails. The flap motor is generally located at the lower part of the instrument panel and belongs to the main switch of the air conditioner. If it is broken, the switch is broken. Even if the cold air with adjustable air energy can only come out of the gap, you will drink a lot. The condenser is too dirty: it is often found that the air conditioner is not working well in summer. There is nothing wrong with the air conditioning system, and the high and low voltages are basically normal. When you go to a 4s shop to repair a car, you will often recommend the owner to do an activity to clean the water tank and condenser. The main purpose of cleaning the water tank and condenser is to dissipate heat. Sticking catkins to the condenser in spring will lead to excessive engine temperature or poor air conditioning. Or the throttle valve is damaged: the failure of expansion valve and throttle valve directly leads to poor air conditioning, which is complicated to check and needs professional repair shop.