The vehicle climate is controlled via a duct/distributor unit with heater and controlled by means of four control knobs:
the left-hand knob mechanically controls the hot and cold air mixing (22 positions);
the middle left knob allows the adjustment, through an electric control, of the air ventilation at four different speeds (4 positions);
the right middle knob makes it possible to select whether or not to set the "recirculation" function which prevents the intake of new air into the passenger compartment.
the right knob mechanically controls the opening of the flaps that regulate the distribution of air flows (5 positions).
The transmission of the air mixing, air distribution and recirculation commands from the knobs to the heater casing takes place by means of bowden cables.The heater unit fitted on the crossmember supporting the dashboard is identical to the (manual or automatic) climate control unit with the exception of the specific components for the air dehumidification and refrigeration circuit. See E6020 AIR CONDITIONING Inside the heater, in addition to the flaps and the pollen filter, is the radiator-heater, in which the engine coolant circulates, plus the pipes.For further details, See descriptions 5020 HEATER The fan is controlled by a dedicated relay and is protected by a dedicated fuse located in the engine compartment junction unit.