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    Up a Creek's Avatar
    Up a Creek Posts: 3, Reputation: 1
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    #1

    Nov 22, 2007, 08:21 AM
    Trane XV 90 won't heat
    Trane XV 90 won't heat. Fan runs, but just recirculates the (cold) air. I checked the covers on the unit -- they are in contact with the pressure switch. Brrr. Thermostat set to 68; inside temp is 59.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    Nov 22, 2007, 09:20 PM
    It should have a blinking light on the control board to tell you what's wrong(lower blower door). You can turn the power off and back on to the furnace to reset the control board to let it try and work again. If something major is wrong it will not light.
    Up a Creek's Avatar
    Up a Creek Posts: 3, Reputation: 1
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    #3

    Nov 26, 2007, 06:37 AM
    Quote Originally Posted by Up a Creek
    Trane XV 90 won't heat. Fan runs, but just recirculates the (cold) air. I checked the covers on the unit -- they are in contact with the pressure switch. Brrr. Thermostat set to 68; inside temp is 59.
    Red LED flashes 4 times -- "Hi Limit Switch". I have shut off all electricity to the appliance after setting thermostat down to lowest setting (40). Waited 5 minutes - restarted --- same result.
    Up a Creek's Avatar
    Up a Creek Posts: 3, Reputation: 1
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    #4

    Nov 26, 2007, 06:39 AM
    Comment on T-Top's post
    Reaffirmed what I had found -- but I was not sure if I was missing something
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