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    gypsy_1978_2020's Avatar
    gypsy_1978_2020 Posts: 1, Reputation: 1
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    #1

    Jan 27, 2013, 04:09 PM
    Dependable 92 gmpn100-4 ignitor doesn't glow
    Furnace model gmpn100-4 fan kicks on for about 2 min. but ignition won't glow and furnace won't light then it shuts down and does nothing
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jan 28, 2013, 06:45 AM
    If you have a multi tester you could unhook the lead wire that goes to the igniter and test at the start up time to see if there is power going to /or trying to start the igniter/glow-plug, if so, probably the igniner is bad. Most of the time when igniter is bad you will see a grayish-white spot on igniter indicating a broken spot
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