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

    Nov 12, 2008, 03:22 PM
    A/C & Heat thermostat will not call for heat
    Problem with a/c & heat thermostat

    Someone in my house knocked the thermostat loose from the wires I bought a new one, the same type, connected it and it will not go on. It will not call for heat. Don't know what to do now. Can anyone suggest anything?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 12, 2008, 03:48 PM
    Post your wiring configuration you are using and what kind of system you have.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    Nov 12, 2008, 04:31 PM

    Unit worked fine until it was hit? How hard were the wires pulled on?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Nov 12, 2008, 05:17 PM
    You can break a wire and not know it because the color jacket will hide the broken wire. You can trace the wires from the thermostat and use a meter to sound them out.
    dac122's Avatar
    dac122 Posts: 463, Reputation: 17
    Full Member
    		  
    #5

    Nov 13, 2008, 07:01 AM

    If you or someone you know is handy with a multimeter its not too hard to trace down the fault.
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