Why does the car still blow hot air when the AC is turned on?
1 Answers
Reasons why hot air comes out when the AC is turned on: Overheat protection of the compressor; Overcurrent protection of the compressor; Malfunction of the temperature sensor on the condenser, temperature sensor on the evaporator, or temperature control switch. Below are detailed explanations: Overheat protection of the compressor: If the compressor load is too high (or even if there is too much refrigerant), causing the compressor temperature to rise excessively, it will automatically protect itself and stop working; Overcurrent protection of the compressor: If the compressor load is too high (or if it is stuck due to a fault), or if the generator suddenly provides excessive current, it will trigger the overcurrent protection and stop the compressor from working; Temperature sensor on the condenser: If the external temperature is too high and the AC load is too large, leading to poor heat dissipation and excessive condenser temperature, the signal from the temperature sensor will cause the AC compressor to stop working; Temperature sensor on the evaporator: If it malfunctions, it will send incorrect signals, causing the compressor to stop working. Temperature control switch malfunction: The symptoms are the same as those of a faulty temperature sensor on the evaporator.
