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Furnace restart I have a residential Day and Night furnace. When it shuts off it cycles very briefly 3 times ( blower) before shutting down. all other aspects are in working order.

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  • tkhinrichs Jan 18, 2009

    It sounds as if the blower just starts and stops right after it reaches temp and shuts down ( on avg. about three times, less than second each). the ignition does not go off

  • tkhinrichs Jan 19, 2009

    Thank You will try

  • Perry Putnam
    Perry Putnam May 11, 2010

    When you say it cycles are you saying that the flames come on for a few seconds, shut off three times. Then the blower comes on for a period before it tries to ignite again?

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What kind of ignition is it? If it is a Hot surface igniter(glow coil) look for a small, maybe 3-4 inch long rod that is mounted to or near the burner. It's probably on the burner on the side away from the igniter and would be in the flame when the burner comes on. Clean it with sand paper. It's a flame sensor and the igniter is sending a small amount of voltage through the flame(fire is a conductor) to the sensor and if it's dirty it won't complete the circuit. If after cleaning it works then great you need to get a new one within a few days. If it doesn't work then the igniter is probably weak and needs replacing but it could be something else so I would call for service instead of guessing.

Posted on Jan 18, 2009

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