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    goodcop047's Avatar
    goodcop047 Posts: 1, Reputation: 1
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    #1

    Nov 29, 2009, 10:03 PM
    Concord 95% light blinking 3 times what are the possible causes to create the problem
    I just installed a concord 80,000 95% furnace, now I am getting a blinking light 3 times, if I jump the pressure sensor wires it works fine what are my possible problems
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Nov 30, 2009, 04:40 AM

    Try BRIEFLY disconnecting the exhaust vent, see if unit will advance through operating sequence. If it does, vent is restricted or undersized. Check for trapped condensate in vent, correct pitch if necessary.
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