Why is the left side of the Audi A6L's warm air cold while the right side is hot?

[PaisleyDella]

The reason for the Audi A6L's warm air being cold on the left side and hot on the right is due to a malfunction in the car's warm air valve. If such a fault occurs, it is necessary to promptly visit the car's 4S store or a repair shop to inspect and repair the warm air valve, which will resolve the issue of inconsistent air conditioning temperatures on both sides. The principle of the Audi A6L's warm air system involves using a blower to direct heat from the warm water tank into the cabin. If the airflow is insufficient or the distribution of hot and cold air is uneven, preventing the heat from the small warm water tank from dissipating properly, it can also result in the warm air temperature not rising. Opening the thermostat too early causes the cooling system to prematurely enter a large circulation. When the vehicle is in motion, the outdoor cold air quickly cools the antifreeze, preventing the engine water temperature from rising sufficiently, which inevitably leads to the warm air not heating up.