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    kdweis's Avatar
    kdweis Posts: 2, Reputation: 1
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    #1

    Nov 27, 2009, 09:46 PM
    York furnace troubleshooting
    York 92 % eff. Furnace will only start & run when I fill the inducer to trap hose with water. Will run about two to three hour and then shut down on # 3 error ( pressure switch) .Please help!
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Nov 27, 2009, 09:52 PM

    Sounds to me like it is getting 2 much water into the inducer motor. Is your drain clear? Is your unit a upflow or horizontal?
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #3

    Nov 27, 2009, 10:07 PM

    Is this a 2 stage gas valve, or single? Is the trap box leaking?
    kdweis's Avatar
    kdweis Posts: 2, Reputation: 1
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    #4

    Jun 13, 2010, 07:54 PM

    Unit is up flow... single stage gas valve.. trap box is not leaking externally . Have re leveled furnace as it was leaning slightly backwards... dropped front by .25 " hope that will help.
    EdLowery's Avatar
    EdLowery Posts: 1, Reputation: 1
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    #5

    Nov 14, 2012, 11:56 AM
    I have a york furnace diamond 90 upright. It lights for about three minutes then the flame goes out, then it relites. What could my problem be.
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