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

    Jan 10, 2010, 01:50 PM
    Concord 80 gas furnace
    When turning furnace on the burner goes on and off three time then shuts its self back off. What could this be?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 10, 2010, 01:55 PM
    Clean the flame sensor with fine sand paper or steel wool.
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    cecilsmith's Avatar
    cecilsmith Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Jan 10, 2010, 02:16 PM
    Concord 80 gas furnace
    On concord 80 furnace when turning on burner fires four or five times but never stays on could it be the limit switch? If so witch one?
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