What Causes a Car Air Conditioner to Suddenly Stop Working?
1 Answers
Car air conditioning is a comfort feature that enhances driving or riding comfort. The main reasons for a car air conditioner not responding include the following: 1. Insufficient refrigerant. Refrigerant is the medium that absorbs heat. If the refrigerant in the system is insufficient due to prolonged lack of refill, pipeline leakage, air infiltration, etc., it will result in inadequate cooling. It is recommended to replenish or conduct a vacuum leak test and, after repair, refill with refrigerant and compressor oil at standard pressure. 2. Compressor not operating. The circulation of refrigerant in the pipeline relies on the compressor's operation. If the compressor fails to engage due to abnormal refrigerant pressure, circuit failure, temperature sensor damage, or burned-out compressor electromagnetic clutch, cooling will be inadequate. It is recommended to replace the temperature sensor or electromagnetic clutch. 3. Poor condenser heat dissipation. After being compressed by the compressor, the refrigerant becomes a high-temperature, high-pressure gas. It then cools in the condenser and depressurizes through the expansion valve to become a low-pressure, low-temperature liquid refrigerant, eventually reaching the evaporator to absorb cabin heat and evaporate. 4. Blocked refrigerant pipeline. This issue most commonly occurs in the liquid storage tank or expansion valve. It is recommended to clean the pipeline, re-vacuum and refill refrigerant, and replace with new parts. 5. Mixed heating. If excessive heating is mixed in due to a faulty temperature blend door when cooling is required, it will result in inadequate cooling. It is recommended to inspect and replace the heater distribution flap motor and check for and resolve computer control faults.
