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Have a Heil Quaker NUGK080AG02 80,000BTU Furnace w/serial # NUGK 080AG02. The Ignitor lights the pilot but then fails to cut out (shut off etc.) once the pilot has been lit. What is the most likely problem and how to repair and/or find replacement or parts?

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Probably your flue isn't clear enough.
Try blowing it out, you might have to remove a cover to do it.
Otherwise it may be the flue passage detector needs replacing.

Posted on Nov 18, 2013

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o light the pilot on a standing-pilot (always on) ignition system, follow the lighting instructions located near the control. Otherwise, try these steps: Light the pilot:
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  2. Press the control knob; the pilot should light. Hold the control knob down until the flame is burning brightly (about 30 seconds). Release pressure on the knob, and turn it to the on position.
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