L322 Range Rover System Description and Operation
AIR CONDITIONING
82-12
DESCRIPTION AND OPERATION
Heater Assembly
The heater assembly controls the temperature, volume and distribution of air supplied to the distribution ducts as
directed by selections made on the ATC ECU control panel. The assembly is installed on the vehicle centre-line,
between the fascia and the engine bulkhead. The heater assembly consists of a casing formed from a series of plastic
mouldings. Internal passages integrated into the casing guide the air through the casing and separate it into two flows,
one for the LH outlets and one for the RH outlets. Two drain outlets at the bottom of the casing are connected to
overboard drain hoses in the sides of the transmission tunnel.
The heater assembly incorporates:
l
A blower
l
A heater matrix
l
Control flaps
l
Control flap motors
l
The thermostatic expansion valve and the evaporator of the refrigerant system
l
The evaporator temperature sensor and either one (low line system) or two (high line system) heater matrix
temperature sensors.