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

    Apr 4, 2009, 01:18 PM
    Problems with SX 80 furnace
    Have Ultra SX 80 , furnace with fire for 10 sec, then will shut down , will fire again in about 1 min, blower motor is on from start ,doesn't seem to wait to heat up fire box.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Apr 4, 2009, 01:54 PM

    First try cleaning the flame sensor.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
    Ultra Member
    		  
    #3

    Apr 4, 2009, 01:56 PM

    Sounds like your flame sensor need cleaned it is a little rod opposite of your ignitor. Just rub it with sand paper or steel wool
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
    Ultra Member
    		  
    #4

    Apr 4, 2009, 01:57 PM
    If that is not it your limit switch may be going bad, how is your air filter is it clean??
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