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

    Dec 23, 2010, 05:17 PM
    Goodman gmp blinks 3 times
    I have a goodman gmp 075-3 furnace that does not ignite. I push the black button and the indicator light blinks three times
    Dennis1523's Avatar
    Dennis1523 Posts: 54, Reputation: 2
    Junior Member
    		  
    #2

    Dec 23, 2010, 06:49 PM
    Read the directions on unit and see what it says for that. It can be a lot of things. Check for resettable roll out switches, Voltage to the inducer motor, voltage to the glow oil or igniter at start up in heat.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #3

    Dec 23, 2010, 07:56 PM
    It's a pressure switch fault. On the 80% furnace I would check for a restricted exhuast vent or a bad pressure switch. Not to say that the control board may have a failing circuit if all of the previous checks out.
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