Why is the car air conditioning compressor not starting?
2 Answers
Car air conditioning compressor does not start for the following reasons: severe internal wear of the compressor, leading to inability to work normally; lack of refrigerant in the car air conditioning; circuit system failure, etc. Insufficient refrigerant in the car air conditioning compressor, relay failure, pressure switch tripping, and other factors may cause the car air conditioning compressor not to engage. Extension: 1. The car air conditioning compressor is the heart of the car air conditioning refrigeration system, responsible for compressing and transporting refrigerant vapor. Compressors are divided into fixed displacement and variable displacement types. According to different working principles, air conditioning compressors can be divided into fixed displacement compressors and variable displacement compressors. 2. 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 day before yesterday when I was driving, the air conditioning wasn't cooling at all, and the compressor showed no signs of activity. Upon inspection, I found that the fuse had blown. Normally, if the relay has poor contact or the wiring is short-circuited due to aging, the compressor won't start. Sometimes, insufficient refrigerant in the air conditioning system or a faulty pressure switch can also trigger the protection mechanism. Last time at the repair shop, the mechanic suggested checking the fuse box first, as that's where most issues occur. If there's unusual noise or no response upon starting, the compressor itself might be stuck or broken. Regular maintenance can prevent these problems—don't wait until summer when it's unbearably hot to regret it. Also, pay attention to whether the engine belt is properly tensioned; otherwise, belt slippage can affect operation. Safety first—if the air conditioning fails on the highway, it can be very dangerous, so it's best to get it checked at a professional shop promptly. My friend ignored this issue and ended up with a more serious malfunction, which was expensive to repair.
