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  1. #1

    Blower motor won't shut off on furnace

    Blower motor decided not to shut off during furnace operation-keeps running even after temp set point reached. Thermostat is a digital Hunter, fairly new, been working fine for a few seasons. Would not shut off when set to off at thermostat. Had to turn off at breaker box. Found a pack rat working/building on top of furnace/duct work. Could he have chewed control wires to thermostat causing this problem? How can I test various possible causes?

  2. #2
    Join Date
    Sep 2005
    Location
    Bay Area, CA
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    843
    Quote Originally Posted by hortogl View Post
    Blower motor decided not to shut off during furnace operation-keeps running even after temp set point reached. Thermostat is a digital Hunter, fairly new, been working fine for a few seasons. Would not shut off when set to off at thermostat. Had to turn off at breaker box. Found a pack rat working/building on top of furnace/duct work. Could he have chewed control wires to thermostat causing this problem? How can I test various possible causes?
    Well i would call someone who knows what they're doing and say hey can you test the various causes of my furnace not working and fix it?
    Global Warming or: None like it hot
    No pleasure, no rapture, no exquisite sin greater... than central air. -Dogma

  3. #3
    Join Date
    Nov 2008
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    Colorado
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    2,687
    hortogl, we offer plenty of friendly advice and recommendations on this forum, but no DIY info on here.

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,782
    Questions and discussions pertaining to HVAC for the home. No pricing, no DIY, Thank You.

    Please read Site Rules Thank you.

    Thread closed.
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    How many times must one fix something before it is fixed?

  5. #5
    Join Date
    Mar 2009
    Location
    central illinois
    Posts
    532
    good luck.
    work to live not live to work.

  6. #6
    Join Date
    Oct 2006
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    The Beach
    Posts
    747
    Call your contractor and tell him the problem. He will bring a new stat. and wire. The problem will not be hard to find. Could be a number of things that are causing the fan to keep running.

    Good Luck
    Blue Fox

  7. #7
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,981
    Could be a number of things for sure, but if it didn't happen before that Hunter t-stat was installed, I would make that DIY grade t-stat my primary suspect.

    Keep fixing it until you have to call a professional.
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


  8. #8
    Join Date
    Oct 2006
    Location
    The Beach
    Posts
    747
    You are right Ro-Bo-Teq. My trash barrel has a lot of those Hunter states in it also some contactors that Hunter welded closed.
    Blue Fox

  9. #9
    Join Date
    Nov 2008
    Location
    Colorado
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    2,687
    Quote Originally Posted by beenthere View Post
    Questions and discussions pertaining to HVAC for the home. No pricing, no DIY, Thank You.

    Please read Site Rules Thank you.

    Thread closed.
    Nobody belived you when you said closed. Guess you forgot to turn the key?

  10. #10
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,782
    Hmm, hate when that happens.
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    How many times must one fix something before it is fixed?

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