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    Viper303 Posts: 1, Reputation: 1
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    Jan 20, 2011, 04:37 PM
    90i furnace
    I have 90ifurnance installed in 2004, The last couple years the furnace induction will start then the furnace the glow plugs comes on but then it will not light. It then locks out.I then turn=off the power to the unit and then it works for couple days to two weeks,then it happens again. I think the circuit but I am not sure. Any ideas?

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