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    jim360's Avatar
    jim360 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 15, 2010, 04:40 PM
    Furnace lock-out
    Getting lock-out due to no ignition on 90% concord furnace
    Can reset by turn system on and off, what might be causing this
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #2

    Feb 15, 2010, 05:13 PM
    No ignition could mean,igniter not working,also could mean limit switch open,, limit switch open could mean furnace overheating, furnace overheating could mean dirty filter,dirty a-coil,slow blowing fan motor, or several more reasons,, check out and let us know.
    jim360's Avatar
    jim360 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Feb 19, 2010, 01:35 PM

    I cleaned the heat sensor with a damp cloth and replaced the filter, filter did look okay but replaced anyway. It has run for 2 days without shutting down. Thanks
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