Audi a6 turns on the cold air. Why is there warm air coming out of the driver's seat?

It needs to be checked. Generally, the refrigeration is not crowded enough, or the heater water valve is broken and the heater is out of control, which will affect the hot air generated by refrigeration. The most serious thing I have ever seen is that the control computer version is broken, which may be very small ~ so I need to detect the problem of the car and ask the car master. 4S shop professional technician, 1 minutes to solve.