What is the difference between A and M in car air conditioning?
1 Answers
Here are the differences between A and M in car air conditioning: 1. Different functions: The A in car air conditioning represents automatic control of the car's internal and external circulation, while M represents external circulation. When the A button is pressed, the air conditioning system will automatically determine whether internal or external circulation is needed based on the air quality outside the car; when the M button is pressed, the car is in internal circulation when the light is on, and in external circulation when the light is off. 2. Different purposes: The internal and external circulation in a car serve different purposes. External circulation mainly provides ventilation. When the air inside the car is polluted, the car needs to turn on external circulation to replace the air inside; when internal circulation is turned on, the air inside the car does not flow, and the air circulates in a closed environment.