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    jcapone2524's Avatar
    jcapone2524 Posts: 23, Reputation: 1
    New Member
     
    #1

    Oct 27, 2008, 06:27 PM
    Roll out switch
    What can cause a roll out switch to open on a warm air gas furnace
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Oct 27, 2008, 11:52 PM
    Just as the device says roll out. Roll out of flames or heat (from the front of the unit) causes this device to trip. It is a safety device and should always be replaced if defective. There can be many direct reasons for failure like restricted vent or debris in the chimny etc.

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