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    gizzit10's Avatar
    gizzit10 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 19, 2013, 08:07 AM
    Goodman heater troubleshooting
    I have a goodman gmh9 model. The draft inducer comes on and then stops and I get a trouble reading that says reverse polarity. Should I replace the inducer?
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    Dec 21, 2013, 12:41 PM
    Most likely the control board is bad but before replacing, use a voltmerer to check the black incoming wire measures +/- 120 volts AC to ground & the white virtually nothing to ground.
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