Does the Light Indicate the Activation of Internal Circulation?
3 Answers
The illuminated light indicates internal circulation, while the light off indicates external circulation. Internal circulation means the airflow channel between the inside and outside of the vehicle is closed, preventing outside air from entering the car and only circulating the air inside the vehicle. Precautions for using the car's internal circulation: For the first 6 months of a new car, it is essential to enhance ventilation, regularly clean the car's air conditioning, and strive to maintain fresh air inside the car. Special attention should be paid to avoiding the use of perfumes or air fresheners to mask unusual odors inside the car. The car air conditioning is an air conditioning device installed in the vehicle, and its functions include: 1. Cooling, heating, ventilating, and purifying the air inside the cabin; 2. Providing a comfortable riding environment for passengers; 3. Reducing the driver's fatigue and improving driving safety.
After driving for so many years, I've always paid attention to that recirculation light – when it's on, it definitely means the recirculation mode is active. This feature keeps recirculating the air inside the car and blocks outside polluted air from entering, which is quite practical. I always turn it on during city traffic jams when there's so much exhaust outside; activating recirculation prevents that smoky smell from getting in, protecting my and my family's health. The AC also works more efficiently – cools down faster in summer and heats up quicker in winter, while saving some fuel consumption too. Just remember not to keep it on continuously for too long, as the air can get stuffy and make you drowsy. It's recommended to turn it off in areas with fresh air to let in some oxygen and ventilate. The light is located in the AC button area, marked by an icon of a car with a circular arrow inside. If the light doesn't turn on, check if the button is faulty or if there's a fuse issue, and get it fixed promptly – safety first.
As someone who has been in automotive repair for over a decade, I can tell you that when the light is on, it typically means the recirculation mode is active. The entire system operates by controlling the airflow valve via a switch, circulating only the air inside the vehicle and reducing the entry of external pollutants. This enhances the efficiency of the air conditioning, making temperature changes inside the car more stable, especially beneficial during highway traffic jams or hazy weather. Common issues include switch wear or circuit shorts, which may cause the light not to illuminate—checking the current with a multimeter can diagnose this. For maintenance, regularly clean the intake filter to prevent blockages. In practice, don't rely on it too much; prolonged use can lead to CO2 buildup, affecting driving. Switch to fresh air mode when appropriate. The light is a simple indicator, and understanding these points can help you prevent minor issues in advance.
