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    hawgwild61's Avatar
    hawgwild61 Posts: 10, Reputation: 1
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    #1

    Dec 6, 2014, 02:59 PM
    Furnace help
    My 70s model intertherm oil furace keeps kicking the reset button, I have replaced all the vital componants( pump,motor,nozzle,electrodes, fuel& lines & made sure the Cad cell was clean) the furnace fires up but will only run for 30sec. & kicks the reset. I checked the flu & it was rusted completely , I plan on putting new sheet metal to this flu , could this be the reason? Its in an old mobile home I use for Deer camp So Id like to get as much use as possible from the parts Ive installed, Thank you
    bitters's Avatar
    bitters Posts: 348, Reputation: 12
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    #2

    Dec 6, 2014, 05:03 PM
    Are you talking about the roll out switch that you are reseting?
    hawgwild61's Avatar
    hawgwild61 Posts: 10, Reputation: 1
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    #3

    Dec 7, 2014, 06:59 AM
    Possibly,I'm resetting the red button to the right of the electrodes ontop side of a control box
    bitters's Avatar
    bitters Posts: 348, Reputation: 12
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    #4

    Dec 7, 2014, 07:50 AM
    If it is the roll out switch then yes the flue could have something to do with it. Model number of the furnace?
    hawgwild61's Avatar
    hawgwild61 Posts: 10, Reputation: 1
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    #5

    Dec 7, 2014, 08:02 AM
    The mod# is MAC1265 , it's a 61000 BTU Intertherm oil furnace, in a 70' mobile home
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #6

    Dec 7, 2014, 07:20 PM
    You are probably getting exhaust gas recirculation into the combustion air. Those old MAC furnaces were notorious for that. The ONLY cure is to replace the furnace unless you get lucky & find a heat exchanger.
    hawgwild61's Avatar
    hawgwild61 Posts: 10, Reputation: 1
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    #7

    Dec 8, 2014, 04:15 PM
    Ok thanks for your Help...
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