What Causes the Car Air Conditioning Compressor to Stop Working?
1 Answers
Car air conditioning compressor not working is due to severe internal wear of the compressor, leading to its inability to function properly. It's important to understand that the compressor plays a crucial role in the air conditioning system, primarily responsible for compressing and delivering refrigerant. This results in the compressor operating at high speeds for extended periods, which is also a contributing factor to its malfunction. Below are the troubleshooting and rectification methods for a non-working car air conditioning compressor: Both high and low-pressure gauges show readings lower than normal: This may indicate insufficient refrigerant. During inspection, the high-pressure pipe may feel slightly warm, and the low-pressure pipe slightly cold, with minimal temperature difference. Bubbles can be observed in the sight glass every 1-2 seconds. In this case, first check for any leaks, repair them, and then replenish the refrigerant. Low-pressure gauge reading significantly lower than normal: Here, a misty flow can be seen in the sight glass, with no temperature difference between the high and low-pressure pipes, and the air not cooling. This indicates a severe leak. Low-pressure gauge reading near zero, and high-pressure gauge reading lower than normal: In this scenario, the air conditioning system often blows non-cool air, with frost forming on the pipes before and after the expansion valve. The reasons could be: on one hand, the expansion valve might be blocked by frost, preventing refrigerant circulation in the system. In this case, repeatedly evacuate the system and recharge the refrigerant; on the other hand, the expansion valve's temperature sensing bulb might be damaged, causing the valve not to open.
