What is the reason for no response when pressing the AC button?
2 Answers
The reasons for no response when pressing the AC button are: 1. Compressor damage; 2. Compressor clutch damage; 3. Partial circuit malfunction. The AC is the air conditioning cooling switch. Pressing the AC button will gradually lower the temperature inside the car. The functions of the car air conditioning system are: 1. Using the continuous transformation and circulation of refrigerant to achieve cooling effects; 2. Drawing in external fresh air for ventilation and air exchange to prevent windshield fogging; 3. Utilizing engine coolant, waste heat, or heat generated by a burner as a heating source, which is then heated by the heater and blown into the car by the blower to raise the temperature and achieve a warming effect.
Oh, it's really annoying when the AC button doesn't respond. I've encountered this several times while driving myself. There could be many possible reasons: the most common one is a blown fuse—that little thing in the car's fuse box melts when there's overcurrent protection; second, the AC switch or button itself might be broken, especially in older cars where wear and tear are more likely; third, poor contact or a short circuit in the wiring, which is more common in older vehicles with worn-out wiring; fourth, the compressor might not start, possibly stuck or lacking refrigerant, causing the whole system to shut down. Additionally, if the car battery is weak or the alternator has issues, insufficient power supply can also prevent the AC from working. I recommend first doing a quick check on the fuse, which is usually located under a cover near the driver's left foot—try replacing it; if that doesn't work, head to a repair shop ASAP. Don't delay until hot weather makes driving sweaty and unsafe—I've learned this the hard way myself. Delaying repairs can lead to more things breaking.
