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    elm384's Avatar
    elm384 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 22, 2013, 10:36 PM
    Comfortmaker furnace diagnostic codes
    My furnace starts then when the burner starts it shuts down?
    parttime's Avatar
    parttime Posts: 1,440, Reputation: 113
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    #2

    Dec 23, 2013, 03:13 AM
    Hi elm and welcome, have you tried cleaning the flame sensor? You can use fine sandpaper and carefully clean sensor and sometimes get a few more years use. Good luck and let us know how it goes.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #3

    Dec 23, 2013, 07:01 AM
    Does the heater LED blink any code? They will be found on the inside of the heater door. Possibly a flame sensor but could be one of the safeties too.
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