Workshop Manuals Factory service & repair Land Rover
01 Discovery Workshop Manual - 2nd Edition02 01 - INTRODUCTION03 04 - GENERAL SPECIFICATION DATA04 05 - ENGINE TUNING DATA05 07 - GENERAL FITTING REMINDERS06 09 - LUBRICANTS, FLUIDS AND CAPACITIES07 10 - MAINTENANCE08 12 - ENGINE - Tdi09 10 11 12 12 - ENGINE - V8i13 12 - ENGINE - 4.0 V814 12 - ENGINE - Mpi15 16 17 18 17 - EMISSION CONTROL19 19 - FUEL SYSTEM - Tdi20 19 - FUEL SYSTEM - MFI21 19 - FUEL SYSTEM - SFI22 19 - FUEL SYSTEM - Mpi23 19 - FUEL SYSTEM - Cruise Control24 26 - COOLING SYSTEM - Tdi25 26 - COOLING SYSTEM - V8i26 26 - COOLING SYSTEM - Mpi27 28 30 - MANIFOLD AND EXHAUST SYSTEM29 33 - CLUTCH30 37 - MANUAL GEARBOX - R38031 41 - TRANSFER GEARBOX32 44 - AUTOMATIC GEARBOX - ZF33 34 35 47 - PROPELLER SHAFTS36 51 - REAR AXLE AND FINAL DRIVE37 38 54 - FRONT AXLE AND FINAL DRIVE39 40 41 57 - STEERING42 43 44 60 - FRONT SUSPENSION45 64 - REAR SUSPENSION46 70 - BRAKES47 74 - WHEELS AND TYRES48 75 - SUPPLEMENTARY RESTRAINT SYSTEM49 76 - CHASSIS AND BODY50 51 80 - HEATING AND VENTILATION52 82 - AIR CONDITIONING53 84 - WIPERS AND WASHERS54 86 - ELECTRICAL
Land Rover 300Tdi Discovery51 · 80 - HEATING AND VENTILATION
51 · Heating & A/C

80 - HEATING AND VENTILATION: DESCRIPTION AND OPERATION (page 3 of 4)

Make
Land Rover
Model
Discovery 300Tdi Discovery
80 - HEATING AND VENTILATIONDESCRIPTION AND OPERATION · page 3 of 4
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HEATING AND VENTILATION

3

DESCRIPTION AND OPERATION

Controls set for unheated air to footwells and face level vents

Heater and ventilation operation

The heating and ventilation system contains a heater
matrix, which is connected to the engine cooling
system, and a 4 speed fan for air distribution. Engine
coolant is circulated through the heater matrix
continuously, except when the temperature controls
are set to COLD.

Recirculated air

When the recirculation switch is pressed, an electrical
servo operates and fully closes the fresh air intake
flap.

Fresh air

When the recirculation switch is returned to the OFF
position, the electrical servo returns and fully opens
the fresh air intake flap.

Heated air

Temperature output is controlled by the temperature
controls which move the air direction and temperature
flaps independently to increase or decrease the
volume of air flow through the heater matrix.
V8 Engine: When both controls are in the cold
position, the coolant valve is turned off.

Face level vent flap

Control at face level, flap fully open. All other vents
closed.
Control at face and foot level, flaps half open.

Unless an air conditioning unit is fitted, only fresh or
re-circulated air is available from the face level vents.

Demist vent flap

Control at demist, flap fully open. All other vents
closed.
Control at demist and foot level, flaps half open.

Parts & tools for this job Staging For Land Rover Discovery

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