What is the External Circulation Symbol?
2 Answers
The external circulation symbol is an unenclosed car with an external air arrow pointing into the vehicle, indicating the flow of outside air into the car. One of the main facilities for regulating air circulation and temperature inside the car is the internal and external circulation. The characteristic of the car air conditioner's external circulation is that it can maintain the freshness of the air inside the car, but its cooling effect is not obvious. Internal circulation allows the air inside the car to circulate when it is closed, and its icon is a closed car with a circular arrow inside. Use internal circulation in traffic jams and external circulation on highways. The use of internal and external circulation should be combined with the air conditioner and heater.
I remember when I first encountered a car's air conditioning system, I noticed the distinctive symbol for the external air circulation mode—it's a small arrow pointing from the window into the car's interior, usually clearly visible on the control panel, mostly in blue or white. I love using this mode most when driving on highways, letting fresh air flush through the car, especially on sunny days, instantly making the interior feel much fresher. Occasionally, I'd share this tip with friends, advising them to check the vehicle's manual to confirm the icon details, to avoid mistaking it for the internal circulation mode and bringing in stale air, which could affect the comfort of the journey. The design of the symbol is actually quite intuitive—its meaning is clear at a simple glance, and once you get used to it, your driving experience improves significantly, no longer needing to fumble around.
