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    bosslady110's Avatar
    bosslady110 Posts: 1, Reputation: 1
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    #1

    Oct 29, 2010, 01:09 PM
    My York Gas Furnace isw flashing 3 times.
    My furnace is flashing 3 times. We've replaced the pressure switch. Still doesn't work. Now what?
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Oct 29, 2010, 06:50 PM

    Three is pressure switch, bird or something is in your vent, or intake is clogged. Drain could be stopped up. Or heat exchanger could be pluged or cracked. All could cause the pressure switch not to pull in
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