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Ruud Silhouette II Fails to Ignite

Hey Folks,

I have a Ruud Silhouette II Natural Gas Furnace. When the heather kicks on, the fan kicks on first, the igniter tries to light... 1 of the inshot burners comes on, and after about 3 seconds cuts off. it repeats this process 3 or 4 more times, and it seems completely random whether it'll actually stay lit or not. Sometimes it goes into lockout without igniting as it gets colder and colder in the house! Any suggestions? Thank you

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  • Anonymous Jan 14, 2009

    adam1619,

    Thank you for writing back. I see the flame sensor rod, it's at the leftmost inshot burner position, the igniter is at the rightmost inshot burner (this is the one that lights). It seems like it'll be tricky to remove but I can try to clean it I'm terrified about these attempts to light racking up my heating bill..

    I do know that if it fails to ignite, the OK light blinks once.. does that indicate a problem or a lockout? Thanks :)

  • davilalj98 Mar 14, 2009

    I turned off the knob to the gas then turned it back on as the instructions say to do but when i turn it back on the fans turn on and it looks like it is trying to ignite but it doesn't catch and the house is getting colder and colder.

  • Anonymous Mar 13, 2014

    Is there and internal filter?

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Its possibly the board make sure the furnace is completely grounded before replacing the board Rudd furnaces have issues with when they are not completely ground they will blow the board.

Posted on Feb 11, 2012

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Sounds like you have bad flame sensor or the sensor is in a bad postition. To get eliminate the lockout turn the power off to the unit and back on again. Look at the circuit board light and see what the troubleshooting code is.

Posted on Jan 13, 2009

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