Heating and ventilation (Heater Assembly): Description and operation

Heater Assembly

Interior View of Heater Assembly

RHD shown, LHD similar

1 Heater matrix 2 PTC heater (where fitted) 3 Heater matrix 'close off' flap 4 Casing 5 Distribution main flap

6 Blower fan 7 Blend flap 8 Distribution fresh air flap

The heater assembly heats and distributes air as directed by selections made on the control panel. The assembly is installed on the vehicle centre-line, between the fascia and the engine bulkhead.

The heater assembly consists of a two-piece plastic casing containing a blower, resistor pack, heater matrix and control flaps. The casing on some diesel models also contains a PTC heater. Integral passages guide the air through the casing from the inlet to the distribution outlets. A wiring harness connects the blower and resistor pack to the blower switch on the control panel.