What are the reasons for a car air conditioning compressor not working?
2 Answers
The reasons for a car air conditioning compressor not working are as follows: severe internal wear of the compressor, leading to inability to function properly; insufficient refrigerant in the car air conditioning system; circuit system failure, etc. Factors such as insufficient refrigerant in the car air conditioning compressor, relay failure, pressure switch tripping, and others may cause the car air conditioning compressor to fail to engage. Extension: 1. Function of the air conditioning compressor: The car air conditioning compressor is the heart of the car air conditioning refrigeration system, responsible for compressing and transporting refrigerant vapor. Compressors can be divided into fixed displacement and variable displacement types. Based on different working principles, air conditioning compressors can be categorized into fixed displacement compressors and variable displacement compressors. 2. Technical classification: Compressors can generally be divided into reciprocating and rotary types. Common reciprocating compressors include crankshaft connecting rod type and axial piston type, while common rotary compressors include rotary vane type and scroll type.
The compressor not working might be related to an experience I had. One day, while driving a long distance, the air conditioning suddenly stopped cooling, and the compressor showed no response at all. There are several common causes: first, electrical faults, such as a blown fuse or a stuck relay preventing power supply; second, mechanical issues, like a broken or loose drive belt that prevents the compressor from turning; third, system protection, where insufficient refrigerant or pressure that's too low or too high triggers sensors to prevent the compressor from starting; fourth, clutch damage, causing the compressor not to engage; fifth, control module errors, such as false fault signals from the computer. Later, I found out it was due to an aged and faulty relay, and replacing it fixed the issue. I recommend doing a simple test before using the car in summer—turn on the air conditioning and listen for the compressor's sound to prevent sudden failures.
