landrover Workshop Repair Guides

Land Rover Workshop Service and Repair Manuals

Heater Control Valve|Testing and Inspection|Page 12482 > < Expansion Valve|Service and Repair|Page 12478
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Heater Control Valve: Testing and Inspection

Output Check 

Symptoms:

Heater emits cold air.

1. Engine running: Check coolant valve opens as a temperature control is moved from COLD.
2. Check for engine running cold.
3. Check heater pipes and hoses for blockage of restriction.
4. Check heater matrix for blockage or restriction, flush system.

Heater emits warm air.

5. Engine running: Check coolant valve closes when both temperature controls are moved to COLD.

Heater Control Valve|Testing and Inspection|Page 12482 > < Expansion Valve|Service and Repair|Page 12478