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    mew44885757's Avatar
    mew44885757 Posts: 2, Reputation: 1
    New Member
     
    #1

    Feb 18, 2008, 07:05 PM
    Flame cycling!
    I have a Temstar NUGK100DH08 gas HVAC. The unit lights then flame dies down, re-ignights and continues this. Temperature set at 72*. Flame doesn't appear to be rolling out. Exhaust motor is running O.K. and no vacume leak.

    Does anyone know what's wrong. Thks Mike!
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Feb 18, 2008, 11:23 PM
    Try cleaning the flame sensor if so equipped.

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