What is the reason why the car air conditioner stops cooling after running for a while?

1 Answers
LaEmery
07/30/25 4:56am
Car air conditioner stops cooling after running for a while because the condenser is covered by pollutants, so it needs to be cleaned regularly. Cleaning can be done with an air gun or a water gun. Here are some methods to solve the problem of car air conditioner not cooling: 1. Clean the condenser and filter screen. If the condenser inside the air conditioner is too dirty, it needs to be cleaned in time. Dust will accumulate on the condenser, causing poor heat dissipation and seriously affecting the cooling effect. First, prepare a bucket of water and carefully wipe the condenser with a cloth to remove dust and stains. 2. The air conditioner filter screen is blocked, causing the car air conditioner not to cool. At this time, the air conditioner filter screen needs to be cleaned. If the filter screen is severely damaged or has reached the end of its service life, it can be replaced directly. 3. Add refrigerant and test the cooling effect of the air conditioner. If it cannot cool normally, it may be due to insufficient refrigerant in the air conditioning system. Since the amount of refrigerant sprayed into the evaporator from the expansion valve is reduced, the heat absorbed by the refrigerant is too little, resulting in poor cooling effect. At this time, refrigerant should be added.
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