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Thread: Heater stuck on

  1. 29th January 2019, 08:50 PM #1
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    Heater stuck on

    D2 TD5 2000

    I’ve noticed that the foot heater is constantly blowing hot air. Doesn’t matter if you have the A/C on or off. Doesn’t matter if the A/C is in auto (which I usually use) or on vent plus feet. It still blows hot air on your feet.

    Any ideas how I can fix this? It’s quite hot and becoming an issue in the hot days.
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  2. 30th January 2019, 05:03 AM #2
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    Run a diagnostic on it to rule out a servomotor

    aircon diagnostic.jpg
    Discovery Td5 (2000), manual, tuned
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  3. 30th January 2019, 07:21 AM #3
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    Cool, I’ll give it a go. Thanks.
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  4. 11th February 2019, 09:41 AM #4
    JimDAUS
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    Quote Originally Posted by sierrafery View Post
    Run a diagnostic on it to rule out a servomotor

    aircon diagnostic.jpg
    Just what I needed, thank you...
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  5. 20th February 2019, 08:40 AM #5
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    I gave the diagnostics a go today. I tried the above instructions and failed to get anything! I tried firstly with the ac off, holding the auto button in and turning the ignition to on position, nothing. Then with the ac on holding auto in and turning ignition on. Again nothing.

    Any ideas?
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  6. 20th February 2019, 08:43 AM #6
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    Dummy! I didn’t read the bit about holding the air distribution switch! I ended up with this:

    According to the chart it shows no fault. But my heater is still stuck on!
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  7. 20th February 2019, 08:57 AM #7
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    I get the same problem every now and then and i found that by putting the ac on flat out and pushing the "Auto" button it sorts itself out.
    Sometimes i have to go back and forth from full heat to full cold a few times But eventually i get a result
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  8. 20th February 2019, 06:51 PM #8
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    Quote Originally Posted by trout1105 View Post
    I get the same problem every now and then and i found that by putting the ac on flat out and pushing the "Auto" button it sorts itself out.
    Sometimes i have to go back and forth from full heat to full cold a few times But eventually i get a result
    Just so we’re on the same page, try putting the ac on full heat, turn car off, retry. If no luck try full cold. Report back?
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  9. 21st February 2019, 10:13 PM #9
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    No luck. I tried the instructions about 4 or 5 times with no fault showing.

    Is it possible that the heater flap is busted and stuck in the open position while the unit thinks it’s actually closed because the closing mechanism is broken off the flap?
    "Land Rover - making mechanics out of everyday motorists for nearly 70 years"
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  10. 23rd February 2019, 01:59 AM #10
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    Quote Originally Posted by John_D2 View Post
    Is it possible that the heater flap is busted and stuck in the open position while the unit thinks it’s actually closed because the closing mechanism is broken off the flap?
    Yes it's possible that the flap pointed with X to be stuck open and lets warm air in
    D2 heater assy.jpg
    Discovery Td5 (2000), manual, tuned
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