What are the reasons for a car air conditioning compressor failure?

[DelEmilia]

Car air conditioning compressor failure can be attributed to the following reasons: 1. Poor internal lubrication of the compressor; 2. Unclean air conditioning system; 3. Excessive refrigerant or lubricant in the system; 4. Slippage of the compressor's electromagnetic clutch leading to excessive friction temperature; 5. Insufficient power configuration of the compressor. Methods to check for a faulty car air conditioning compressor include: 1. Inspecting for oil stains at connection points and seams of each device; 2. Checking if the HVAC valve or thermal control air damper is closed and whether other air dampers are adjusted properly; 3. Verifying if the condenser fan is operating well; 4. Examining if the drive belt is broken or loose, especially if it's too loose.