What's the matter if the car air conditioner doesn't respond?

[DeJayden]

If the car air conditioner suddenly stops responding, it may be due to blocked pipelines, excessively high or low pressure; poor heat dissipation; blocked expansion valve; insufficient or excessive refrigerant; or the compressor not operating. Below are the methods for troubleshooting car air conditioner issues: 1. Check the refrigerant pressure. If the pressure is too low, it indicates a lack of refrigerant, which needs to be replenished. Insufficient refrigerant can affect the air conditioner's cooling. Check if the air conditioning system's blower is operating normally and the airflow volume. If there's an issue with the blower, the air conditioning system's cold air cannot be delivered to the car interior in time, resulting in no cold air from the vents. 2. Inspect whether the surface of the air conditioning system's evaporator is too dirty. If the evaporator surface is too dirty, the cold air from the vents will decrease. The cold air from the air conditioner is mainly produced by the evaporator. Check if the condenser pipeline is leaking. If the condenser pipeline is leaking, the air conditioning system will not be able to cool. Examine the air conditioning system's condenser. If the condenser is too dirty, it will affect heat dissipation and consequently the operation of the air conditioning system. 3. The refrigerant's circulation in the pipeline depends on the compressor for transportation. If the compressor cannot engage and operate due to abnormal refrigerant pressure, circuit faults, damaged temperature sensors, or burned-out compressor electromagnetic clutches, the cooling will be insufficient. It is recommended to replace the temperature sensor or electromagnetic clutch.