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The furnace burners won't stay lit

The furnace ignites, the burners light and then they turn off after about 10 seconds. The process repeats. What can we do to get the burners to stay lit?

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  • brian c
    brian c May 11, 2010

    Do you mean they stay lit when you light them manually, or when the thermostat turns them on?

  • Lynne
    Lynne Dec 15, 2013

    We are not having a problem with pilot light it is the blower or motor. It just does not blow the air consistantly. I think the motor is going out.

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  • 25 Answers

Could be a couple things. First and easiest is to check your intake combustion air supply. If it is blocked by anything or just not enough flow, it will put out the flame. Next would be the flame sensor, usually a temperature probe near the flame front. If it's not reading an increase in temp within a pre-programmed time, it will kill the flame. It can be checked with a multimeter.

Good luck!

Posted on Jan 25, 2008

  • Lynne
    Lynne Dec 15, 2013

    it is not the flame but I think the motor is going out. The pilot light does stay on. It just does not blow cosistantly

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fscanlan_0.jpg

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