What does the AC symbol on a car air conditioner mean?

[HadleyLee]

The AC button in a car's air conditioning system is the cooling switch, which serves as the power switch for the air conditioning compressor. Here are the details: 1. When the AC button is pressed, the car's air conditioning compressor activates, allowing the blower to produce cold air. Pressing the AC switch engages the compressor's electromagnetic clutch, starting the compressor's operation and enabling the car's air conditioning to enter cooling mode. 2. The outer knob labeled MAX stands for maximum, while MIN stands for minimum. If the car is equipped with automatic air conditioning, simply press the AC button followed by the AUTO button. The automatic system will adjust the interior temperature based on the difference between the inside and outside temperatures. When using the heater in winter, be sure not to press the AC button, as it not only consumes more fuel but may also produce cold air. This is because the car's heating system does not require the compressor to operate; instead, it utilizes heat from the engine's coolant.