Do you know four types of common problems in automotive air conditioners?

First, the internal circulation switch is closed for a long time, which causes the cooling effect to decrease.

The following figure shows the inner cycle switch. If the owner accidentally turns off the internal circulation switch, it means that the air conditioner enters the external circulation state, and the outside air enters. If it is in the external circulation state for a long time, the dust in the outside air will enter the air circulation, and the evaporator is easily polluted, which is not conducive to cooling.

Second, the leakage of snow species, causing cooling down and adding snow species can not be done casually. Because the snow does not evaporate, its pressure will increase with the increase of temperature. For example, the snow pressure is 4-5 kg ​​in the winter, but it can reach 8-9 kg in summer when the snow is high. When the pressure becomes larger, even if there is a slight crack in a certain air-conditioning duct component, the snow species will leak, so the leakage of the snow species is for a reason.

Third, the condensing network dust, affecting the cooling effect of the car for a long time, cooling the Internet will be covered with dust, in this case, the owner just pay attention to the car wash, use the tap to clean the dust condensation network, you can solve this problem.

Fourth, air-conditioning compressor failure, causing cooling down Compressor most of the failures are from external collisions, because the life of the compressor is generally very long, if the general normal travel 30,000 kilometers per year, the compressor life can reach 20-30 million Therefore, a good compressor will not be damaged for 10 years. The manufacturer's warranty policy for the compressor is two years or 60,000 kilometers.

Understand the causes of these automotive air conditioning faults, and quickly check what's wrong with your car's air conditioner! If it is not the above reason, go to the repair shop to see it!