What are the reasons for the failure of the car air conditioning compressor clutch to engage?

[Gail]

Detailed reasons and solutions for the failure of the car air conditioning compressor clutch to engage are as follows: 1. Blockage in the high-pressure pipeline or clogged liquid storage dryer: The high-pressure pipeline may be deformed due to external force, causing blockage, or the liquid storage dryer may be clogged. There is a noticeable temperature difference between the inlet and outlet of the dryer. If the dryer is clogged, the temperature difference between the inlet and outlet will increase, and the more severe the blockage, the greater the temperature difference. Solution: Replace the high-pressure pipeline or the clogged liquid storage dryer, and clean the condenser if necessary. 2. Compressor damage: The electromagnetic clutch of the compressor cannot engage properly, resulting in slippage, and the compressor's drive belt may also slip, producing noticeable mechanical noise during operation. Solution: Adjust the gap of the electromagnetic clutch according to the relevant manual or replace the electromagnetic clutch or compressor.