What does the AC MAX button in the car mean?

[Isaiah]

max-ac button means the original basic AC cooling is changed to maximum cooling. Here is some information about max-ac: 1. Cooling principle: The cooling principle of car air conditioning is the same as that of other refrigeration air conditioners. It uses the principle that refrigerant R-134a absorbs a large amount of heat when it changes from liquid to gas to achieve cooling. 2. Working method: The air inside the car continuously flows through the evaporator, thereby reducing the temperature inside the car. After the liquid refrigerant flows through the evaporator, it turns into low-pressure gas again and is sucked back into the compressor for the next cycle of work.