HEATER - Description

Description

The vehicle climate control system involves a duct/distributor unit with a heater, controlled via two knobs in the dashboard (each knob carries out a dual function, one with an outer ring nut, one with a proper knob in the centre:

the ring nut for the left knob mechanically controls the mixture flap between hot and cold air; the inner knob electrically controls the ventilation of the air at four different speeds;

the ring nut for the right knob, mechanically operated via a cable, controls the opening of the flaps which regulate the distribution of air flows; the inner knob mechanically controls the engagement of the recirculation function.

For more details,.

There is also a red button in the control unit for switching on the hazard warning lights See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS and a button for switching on the heated rear windscreen See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING.

The fan is supplied by a line protected by a special fuse and controlled by a special relay in the engine compartment control unit.

The operation of the fan at different speeds is achieved through a resistive divider, protected by a special thermal fuse to prevent overheating.

The control unit is supplied by a line controlled by the ignition and protected by a fuse in the underdashboard control unit.