Is It Normal for the BMW 3 Series Air Conditioning Compressor Not to Shut Off?

[DeNevaeh]

Air conditioning compressor not shutting off could be due to setting issues or air conditioning damage. Reasons for the air conditioning compressor not shutting off: The car's air conditioning temperature is set too low, causing the compressor not to shut off. A faulty temperature sensor leads to the compressor not shutting off. The internal computer board thermostat of the air conditioning unit is broken, causing the compressor not to shut off. A refrigerant leak in the air conditioning refrigeration system results in insufficient cooling, causing the compressor not to shut off. Solutions: If the refrigeration system works normally after turning on the air conditioning, then the fault is likely a thermostat malfunction, and the thermostat system should be checked. First, check if the temperature sensing tube connected to the thermostat has fallen off; if so, it should be fixed back to its original position. Secondly, after prolonged use, the internal contacts of the thermostat may become sintered, the control fluid inside the thermostat may leak, or the thermistor of the electronic thermostat may change value. If the cooling effect is poor, it might be due to refrigerant leakage in the air conditioning system, causing the residual refrigerant to fall below the standard cooling capacity. As a result, the resistance value of the thermistor does not meet the required value, so the air conditioning will not shut off.