Why does the car still blow hot air when the AC is turned on?

[DiKiara]

When the car's AC is turned on but still blows hot air, it could be due to compressor failure or temperature sensor malfunction. Below are the relevant explanations: 1. Compressor failure: If the compressor load is too high, causing the compressor temperature to rise excessively, it will automatically activate protection; if the compressor load is too high or gets stuck due to a malfunction, the generator may suddenly deliver excessive current, triggering the compressor's overcurrent protection. 2. Temperature sensor malfunction: If the air conditioning load is too heavy or heat dissipation is poor, causing the condenser temperature to rise too high, the signal from the temperature sensor will cause the air conditioning compressor to stop working. Car air conditioning refers to the air conditioning device installed in a vehicle, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety.