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

    Dec 6, 2006, 03:35 PM
    Not cycling properly
    My fan and gas shuts off after only a few minutes in the heating cycle and restarts again shortly, only to shut off again... and so on. I think it's the fan limit switch but don't know if I should replace it or try adjusting the limit. Any advice??
    chris051873's Avatar
    chris051873 Posts: 17, Reputation: 1
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    #2

    Dec 6, 2006, 05:34 PM
    Quote Originally Posted by crmiller
    My fan and gas shuts off after only a few minutes in the heating cycle and restarts again shortly, only to shut off again....and so on. I think it's the fan limit switch but don't know if I should replace it or try adjusting the limit. Any advice???
    Hello,,
    This was happening to me on my carrier furnace, and also it would not even start the blower, my problem was a bad motherboard after the heating contractor replaced some sensors and switches, hope this helps
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #3

    Dec 7, 2006, 05:21 PM
    Dirty flame sensor, overheating? Could be something else.
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