What to Do When the Car Air Conditioner Stops Cooling?
1 Answers
Reasons and solutions for car air conditioner not cooling: 1. Insufficient or low refrigerant: A common reason for the car air conditioner not cooling is insufficient or low refrigerant, which could be due to minor leaks. The solution is to add refrigerant, but note that if adding from the low-pressure side, do not invert the refrigerant bottle; if adding from the high-pressure side, do not start the engine. 2. Loose drive belt of the car air conditioner compressor: Car cooling relies on refrigerant, which is transported by the air conditioner compressor, and the drive belt is a crucial moving part that drives the compressor. If the drive belt is loose, the compressor may slip during operation, reducing transmission efficiency, lowering the compressor's speed, and decreasing refrigerant delivery, leading to the air conditioner not cooling. If the compressor drive belt is too loose, it should be tightened. If it cannot be turned by hand, it is too tight and should be loosened slightly. Of course, if tightening is ineffective or the drive belt is cracked or aged, it should be replaced with a new one. 3. Unqualified refrigerant and frozen oil: Excessive impurities in the refrigerant and frozen oil can clog the car air conditioner's filter, causing it not to cool, increasing resistance and reducing the flow of refrigerant to the expansion valve, resulting in insufficient cooling. In this case, qualified refrigerant should be selected for repairs, as it plays a critical role in the car air conditioner. 4. Moisture intrusion into the refrigeration system: If moisture enters the car air conditioner's refrigeration system, it can cause insufficient cooling or no cooling. If this is the case, replace the desiccant or dryer in the car air conditioner, and then evacuate the system and refill it with the appropriate amount of new refrigerant.
