Only Hot Air Coming Out
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Thread: Only Hot Air Coming Out

  1. #1
    Join Date
    May 10th, 2019
    Bedford NY

    Unhappy Only Hot Air Coming Out


    My 04' HSE has developed a symptom where only hot air will come from any vent selected.

    It feels as is the heat is way higher than any hot air which I recall on the coldest days, it feels like the thermostat has completely failed

    This occurs when

    - selector under center dash vents set to cold
    - thermostat set as low as it will go
    - air conditioning engaged - or not engaged

    I don't know if it is a blend motor, a control or some other gremlin - just hoping someone can help me trouble shoot


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  3. #2
    NEWBIE demobud's Avatar
    Join Date
    May 18th, 2019

    Re: Only Hot Air Coming Out (and I am not talking about Trum

    Are you getting an engine overheat message at all? The ECM will shut down the AC if it detects an overheat situation. I just had this happen on my '11 SC due to a thermostat housing failure.

    Best of luck!
    Last edited by RRToadHall; May 22nd, 2019 at 10:07 AM.
    2011 (L322) Range Rover Supercharged 5.0V8

  4. #3
    Join Date
    May 19th, 2014
    Long Island, NY

    Re: Only Hot Air Coming Out (and I am not talking about Trum

    Have you checked the AC system charge/refrigerant level? Assuming you have have fan and can hear the plenum doors open and closing, that's where I'd start troubleshooting.
    2006 Range Rover HSE 4.4L AJ41
    2004 Range Rover HSE 4.4L M62

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