The phenomenon you described is because when the vehicle is driving at a high speed with the air conditioner turned off, the airflow enters the compartment through the air conditioner inlet. When the air conditioner is turned off, the wind deflector is in a standard state, so the airflow enters the air duct through the air inlet of the air conditioner, is heated by the small water tank, and is sent to the lower air outlet to blow on the foot surface. This phenomenon is normal. To avoid this phenomenon, you can put the air conditioner in the internal circulation position, or lower the temperature of the air conditioner and close the warm air water valve, resulting in no heat source in the small water tank, even if the wind blows to the foot surface, the temperature is normal.
I hope the above answers are helpful to you. Thank you for your concern!
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