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-   -   A.O.Smith FPS 50 hot water heater burner won't light (https://www.askmehelpdesk.com/showthread.php?t=442424)

  • Feb 2, 2010, 06:54 PM
    Jeep1
    A.O.Smith FPS 50 hot water heater burner won't light
    The pilot light is lit but the burner won't light. The vent blower is running, the vent flapper valve is free to move and in the open position. If I tap the flapper valve shut for an instant, the burner lights. What position should the flapper valve be in when the burner is running?

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