Warm air is realized based on the heat of the coolant, that is, the coolant that has been damaged by the engine enters the small water tank in the evaporation box through the pipeline, flow valve, and circulation valve. After the blower rotates, the air flows to the small water tank. The air becomes hot due to heat, and the air is adjusted according to the air conditioner. In this process, there will also be many electronic and mechanical components such as air outlet sensor, evaporation box temperature sensor, flow valve, circulation valve, water temperature sensor, control unit, etc.
Diagram of how to turn on the heater in the old Audi a4
Turn the heater control switch of the old Audi a4 and the A/C button on the control panel, and turn the temperature adjustment on the left and right sides of the Audi a4 button to turn on the Audi a4 heater. The specific startup method is: 1. After turning on the machine, about 5-10 minutes later, when the water temperature rises to normal temperature, the warm air can be turned on. 2. Adjust the poor follow-up mode of the air conditioner to circulate in the car. 3. Turn to warm air mode and turn to the right direction of the red dot. 4. Adjust the wind direction of the air outlet by adjusting the appropriate gear.
What happened to the heater in the old Audi A4?