What are the reasons for the car air conditioning compressor not rotating during operation?
2 Answers
The reasons for the car air conditioning compressor not rotating during operation are: 1. Poor contact of the main control switch; 2. Damage to the fan motor coil; 3. Loose fastening screws between the fan motor and the fan blade; 4. Open or short circuit of the fan capacitor. The steps to turn on the car air conditioning are: 1. Turn the knob in the air conditioning control area to the cooling or heating zone; 2. Press the AC button when cooling. Methods for car air conditioning maintenance include: 1. Comprehensive inspection of the air conditioning system; 2. Regular replacement of the air conditioning filter; 3. Regular replacement of the air conditioning grid; 4. Use high-pressure methods to remove dust and hair impurities accumulated on the evaporator.
Last time I drove long-distance, the air conditioning compressor suddenly stopped working. After some troubleshooting, I found that a blown fuse was the main culprit. This is common in electrical issues, such as short circuits due to aging wires or poor relay contact—when the fuse blows, the current is cut off, and the compressor naturally stops working. Insufficient refrigerant is also a frequent issue; when the system pressure drops too low, the pressure switch automatically shuts off the compressor to prevent damage. Another common problem is clutch wear, especially in older vehicles where prolonged use weakens the electromagnetic force, preventing proper engagement. I’ve also checked a few times and found that a faulty thermostat can misread temperatures and prevent startup. I recommend first checking simple things like fuses and fan belts, and getting timely repairs to avoid sweltering on the road or spending more on part replacements. Regularly cleaning the condenser to maintain good heat dissipation can effectively prevent such failures.
