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    petronek's Avatar
    petronek Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 4, 2009, 10:36 PM
    York Furnace Flashes 7 Times will not ignite every time
    I have a York furnace, the last couple weeks I have been waking up to a 65 degree house when it should be 70, the thermostat says it should be on, but no squirells turning. I look at the board and it is flashing 7 times, which is ignition lockout, what is causeing this?
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Dec 5, 2009, 05:37 AM
    The most common cause, and easiest cure, is a dirty flame sensor. Remove and clean with fine sandpaper or steel wool.
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    cfayo's Avatar
    cfayo Posts: 1, Reputation: 1
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    #3

    Nov 20, 2011, 08:39 PM
    KC3 I had the same Issue where my York gas furnace is blowing cold air and flashing red 7 times. I used your method as described, now my furnace is blowing hot air again.
    Thanks for sharing your knowledge.
    nenoneno's Avatar
    nenoneno Posts: 1, Reputation: 1
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    #4

    Oct 5, 2012, 10:28 AM
    I did the same, I replaced the igniter and the fs. Flame sensor and still no good, I unplugged some wires and reconnect them by the gas valve and off/on and that would make it work for few more days, played with the sensor of air/in/out and it clicks so I know that works, wonder if it is the board.. the 2 items got replaced that everyone talks about, flame sensor, and ignition because while cleaning it I broke it few months ago.
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