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    ScurvyDog's Avatar
    ScurvyDog Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 17, 2010, 05:26 AM
    This is old news but I have the Model THM501
    In the Fall, I would have to swap the wires to get the furnace running. In the Spring, switch them back. What's up with that?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Sep 17, 2010, 05:41 AM

    The wires to what? Which wires are you swapping?

    Isn't your thermostat wired correctly?
    ALWEEZY's Avatar
    ALWEEZY Posts: 4, Reputation: 1
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    #3

    Sep 17, 2010, 07:35 AM
    It really depends on what wires your swapping and how your furnace is running.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #4

    Sep 17, 2010, 07:36 AM
    As asked before, not knowing what wires you are talking about, just a guess, do you have a jumper from rh to rc? This sends 24 volt power to either the heat mode or the cooling mode, which ever setting you are wanting
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #5

    Sep 17, 2010, 02:12 PM
    Quote Originally Posted by smoothy View Post
    The wires to what? Which wires are you swapping?

    Isn't your thermostat wired correctly?
    Was someone looking for me
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