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  1. #1
    Join Date
    Dec 2007
    Location
    Elizabethtown KY
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    Amana Heating unit

    I came home this evening and my outside heating unit was making a low humming noise and smoking a little. What could this mean? Or what could this possibly be?

  2. #2
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
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    Defrost (normal). It should go away. You'll hear some wooshing noises probably, too. This prevents the outside coil from freezing over. If it's defrosting, that's not smoke.

  3. #3
    Join Date
    Jun 2007
    Location
    Round Rock
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    If you have a heat pump and it is fairly chilly outside. It was probably going through the defrost cycle. If it starts acting normal within an hour, its probably what it is. Which is what it is supposed to do. Was the fan on top of the unit running or not?

  4. #4
    Join Date
    Dec 2007
    Location
    Elizabethtown KY
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    Amana Heating unit

    The fan was not running and it had a weird smell. It didn't really smell like anything burning, just smelled really funny. I have never seen it do this before.

  5. #5
    Join Date
    Dec 2007
    Location
    Elizabethtown KY
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    The fan was not running. And it had a weird smell. It was a faint smell, but I freaked out and turned the heat off. Should I turn it back on?

  6. #6
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
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    I think you can turn it back on. I think all it was doing was defrosting. It may continue to defrost until it finishes the defrost cycle. During the defrost cycle, the fan doesn't run.

  7. #7
    Join Date
    Jun 2007
    Location
    The Twilight Zone
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    Quote Originally Posted by hotgirl0324 View Post
    I came home this evening and my outside heating unit was making a low humming noise and smoking a little. What could this mean? Or what could this possibly be?
    My best guess is because you are a "HotGirl", the condenser got a little excited when it saw you.

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