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    feather river aire's Avatar
    feather river aire Posts: 1, Reputation: 1
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    #1

    Jan 28, 2008, 10:59 PM
    Limit switch
    What does a limit switch do in a furnace and would it not allow the gas burners to come on?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 28, 2008, 11:37 PM
    ((what does a limit switch do in a furnace))

    It prevents a furnace from overheating and causing a fire.


    ((and would it not allow the gas burners to come on?))

    Yes because allowing the gas valve to come on or stay on will allow the furnace to overheat.
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