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    0987qj's Avatar
    0987qj Posts: 1, Reputation: 1
    New Member

    Jan 26, 2010, 06:10 AM
    Why does a furance burner turn off and on rapidly
    When burner and fan is operating the burner ignites off and on
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert

    Jan 26, 2010, 08:38 AM
    If your no name no model number unit has a flame sensor clean it with fine sand paper or steel wool.

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