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-   -   Limit switch (https://www.askmehelpdesk.com/showthread.php?t=177873)

  • Jan 28, 2008, 10:59 PM
    feather river aire
    Limit switch
    What does a limit switch do in a furnace and would it not allow the gas burners to come on?
  • Jan 28, 2008, 11:37 PM
    hvac1000
    ((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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