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    smaskew's Avatar
    smaskew Posts: 2, Reputation: 1
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    #1

    Feb 15, 2014, 03:51 PM
    Goodman HVAC system won't heat
    I have a goodman HVAC system model number GMNT080-4B and it won't heat. Opened the upper portion and the propane is getting lit by the lighter and runs for about 5 seconds. Then shuts off and goes through the cycle again and again until I turn the system off. Opened the bottom and the circuit board (white rodgers 50T35-730) has solid light which from my web searches is a good thing. Fan works when system set to fan on. Any ideas?
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #2

    Feb 15, 2014, 04:57 PM
    Remove & clean the flame sensing rod. Clean the metal rod part with fine steel wool or a Scotch Brite pad.
    smaskew's Avatar
    smaskew Posts: 2, Reputation: 1
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    #3

    Feb 16, 2014, 10:12 AM
    Grady White, you are the man. Furnace is running again.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #4

    Feb 16, 2014, 11:56 AM
    Common problem with a simple fix. Glad I could help.
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