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

    Jan 14, 2007, 02:20 AM
    Heating unit
    My heating unit will not stay lite. I can here it trying to ignite, but after about three tries it stops. Is there a fix? I just purchased a new thermstat
    seagull's Avatar
    seagull Posts: 5, Reputation: 2
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    #2

    Jan 14, 2007, 03:54 AM
    Quote Originally Posted by lawtoo
    my heating unit will not stay lite. I can here it trying to ignite, but after about three trys it stops. Is there a fix? I just purchased a new thermstat
    U did not mention what type of heating unit u have?.
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #3

    Jan 14, 2007, 10:38 AM
    Does you furnace have a standing pilot or does it use a hot surface ignitor??
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #4

    Jan 14, 2007, 11:53 AM
    Likely the thermostat has nothing to do with it. If the gas goes off only a few seconds after it comes on, it is the flame detector, a flat ceramic doodad near one of the gas jets. It should have a couple of wires going back to the control board. Sand it clean.

    If the gas stays on a couple of minutes, and the blower doesn't come on, likely it is the blower relay. It is a little square metal doohicky on the control board. Giving it a rap with a screwdriver handle shortly after the gas comes on may start the blower. The problem will only get worse, meaning replacing the board.
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