What is the situation when the air conditioner is turned on and the internal circulation and external circulation are turned on? According to the different use scenarios, the selected modes are different. Please refer to the following steps for details: 1. After the vehicle is exposed to the sun outdoors, open the external circulation ventilation and heat dissipation first after getting on the vehicle. At the same time, you can also open the windows and sunroof to speed up the heat dissipation. After 3-5 minutes, let the temperature in the vehicle basically balance. At this time, close the windows, open the refrigeration, and change the air conditioning cycle to internal circulation. 2. In cold weather, you should wait a moment after getting on the car until the engine temperature is normal
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