What are the symbols for the car air conditioner's internal and external circulation modes?
1 Answers
Car air conditioner's internal and external circulation symbols are: The internal circulation symbol features a closed car interior with a circular arrow inside; The external circulation symbol shows an open car with external air arrows pointing into the vehicle. External circulation draws in outside air, heats or cools it, then delivers it inside the car, facilitating gas exchange between interior and exterior. Internal circulation recirculates the existing cabin air after heating or cooling it. The purposes of external and internal circulation are: 1. When using AC cooling or heating, activating internal circulation helps rapidly decrease or increase cabin temperature; 2. Switch to internal circulation when outside air quality is poor.