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    bdwalsh's Avatar
    bdwalsh Posts: 3, Reputation: 1
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    #1

    Oct 19, 2009, 02:15 PM
    Gas furnace will not ignite
    Hi,

    Yesterday morning I turned on my Goodman GMT090-4 for the first time for this season and am getting no heat, air, or ignition: The draft inducer blower starts and runs for about 2-3 minutes, but then nothing else happens (no ignition glow; no gas flow; etc.) and then the unit shuts off and I get a repeating 3-flash LED. I thought it might have been a problem with the pressure switch hose but there were no blockages in either the fittings of either end or in the hose itself, which is in good order. Any suggestions for what might be the problem? I do not have a user manual as the furnace came with the house & I was not provided one by the previous owner, so I am hoping someone on this forum will be able to help me.

    Thanks in advance.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Oct 19, 2009, 04:03 PM
    Can you see any black, dark gray, spots on the ignitor,, cracks might be seen,, do not handle with bare hands and be careful the ignitor is very,very fragile,, you could unplug and check continuity between the two wires that go to the ignitor without taking it off
    helany's Avatar
    helany Posts: 4, Reputation: 1
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    #3

    Oct 19, 2009, 06:05 PM

    I don't know if this might help but even if it isn't exactly what you need maybe it might help lead to the right direction?It's a goodman service manual.


    http://www.hvacpartsshop.com/Gmpe075-3%20Series.pdf
    bdwalsh's Avatar
    bdwalsh Posts: 3, Reputation: 1
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    #4

    Oct 20, 2009, 05:27 PM
    Quote Originally Posted by helany View Post
    I don't know if this might help but even if it isn't exactly what you need maybe it might help lead to the right direction?Its a goodman service manual.


    http://www.hvacpartsshop.com/Gmpe075-3%20Series.pdf

    This is a good & helpful start; thanks. I couldn't find this manual anywhere online so I imagine I'll be able to further diagnose & hopefully fix my problem from here.
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