Heating and ventilation (Audi 80 B4)

The oncoming air flow passes through the opening between the hood and the windshield and then through the air intake box is directed into the passenger compartment. Air supply to the passenger compartment can be performed forcibly using an electric fan. If the car is equipped with a dust filter, the air first passes through this filter. When the heater is turned on, the corresponding flap directs the air flow to the heater radiator, in which hot coolant circulates. When the heater is turned off, the air from the air intake is directed around the heater radiator.

1. Turn the rotary switch for forced air supply to the passenger compartment and the heater fan to the right. The rotary switch is located on the left side of the heater and ventilation control unit. This operation will open the air supply flap and the fan will rotate at an increased speed.

2. Turn the rotary switch for the air temperature supplied to the passenger compartment to the left or right. This switch is located in the middle of the heater control panel. The temperature of the air supplied to the passenger compartment will increase or decrease according to the position of the knob.

Set the rotary switch knob on the right side of the heater control panel to the appropriate symbols and make sure that air is flowing through the correct deflectors.

[The original version of the article is posted on the website: audimanual.ru]