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    ditloc's Avatar
    ditloc Posts: 9, Reputation: 1
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    #1

    Dec 13, 2011, 04:14 PM
    Reverse polarity issue or circuit board problem?
    My goodman pgb03075-1a stop blowing air. Took it apart and saw no flame when auto ignition fired 3 tries. It shuts off then led light constantly flashes. Not one of issues listed. Called goodman co. They said it was reverse polarity how do I fix?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Dec 13, 2011, 04:36 PM
    Redial that number, they should know.
    You need to know reverse polarity of what.
    I would bet a loose/bad connection.
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    ditloc Posts: 9, Reputation: 1
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    #3

    Dec 13, 2011, 08:00 PM
    They would not say, person responded that they don't have technical help, but to call for service.. punks!! But just remember something about 24 volt/??
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    ditloc Posts: 9, Reputation: 1
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    #4

    Dec 13, 2011, 08:04 PM
    I'm thinking of something in the circuit board because, pretended to call one of the gas servicemen. He kind of looked over it and first suggested the gas regulator because it had no flame when ignited. Then he told me that his brother had a situation where the led light flash none-stop, so he said change circuit board??
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    Stratmando Posts: 11,188, Reputation: 508
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    #5

    Dec 14, 2011, 05:19 AM
    I found this, but don't believe it is 120 Volts? And don't believe you reversed the 120 volt wires:

    On my central air inside - FixYa
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    ditloc Posts: 9, Reputation: 1
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    #6

    Dec 14, 2011, 07:38 PM
    Sounds good? It could be last resort. But now after changing the circuit board, there were four flashes, which means the limit switch is open. I'll try to replace it, better work. Thanks for the update!
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    ditloc Posts: 9, Reputation: 1
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    #7

    Dec 14, 2011, 07:41 PM
    Oh, and another thing why would unit work all these years without problem, then all of sudden it's reversed?? Confused!!
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    ditloc Posts: 9, Reputation: 1
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    #8

    Dec 14, 2011, 07:42 PM
    Didn't touch those wires at all!!
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    Stratmando Posts: 11,188, Reputation: 508
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    #9

    Dec 15, 2011, 06:37 AM
    I didn't think you messed with the wires. I would jump out the limit switch at the terminals and see if the trouble clears.
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    ditloc Posts: 9, Reputation: 1
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    #10

    Dec 15, 2011, 08:41 PM
    This is all new to me, so how would you go about doing(jump out of the limit switch) it? Just want to know? But I did ordered a new one because the led light flashing indicated it. It was cheap 18 bucks. It should come tomorrow. Thanks I'll update bro!
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    Stratmando Posts: 11,188, Reputation: 508
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    #11

    Dec 16, 2011, 07:21 AM
    A limit switch is usually 2 wires and is normally open, or normally closed. You can make or break a connection to simulate.
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    ditloc Posts: 9, Reputation: 1
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    #12

    Dec 16, 2011, 08:24 PM
    OK thanks, have to wait till Monday for switch to arrive. But if I have time this weekend I will try... get back to you thanks again!
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