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Anonymous
Anonymous Posted on Jan 15, 2009
Answered

Gas furnace wont stay lit

Concord 80plus gas furnace(rcg8oa100o20-1a)
Lights three times then shuts down, has heavy clicking sound during and after lighting, runs for maybe 10 seconds each time

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  • Anonymous Jan 16, 2009

    Is there any other circustances that may cause this same effect, I took part off and cleaned with no luck before I change out part can I test with lighter, could it be the bourd or the therastet itself

  • Anonymous Mar 12, 2014

    Flipping the switches on and off several times bring in back on

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1 Answer

Bill Allen

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  • Posted on Jan 15, 2009
Bill Allen
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Sounds like the thermocouple that senses when the burner ignites is faulty. when the burner is first lit it looks for a signal from the thermocouple telling it that it has ignition. i have had some luck removing the part (furnace off) and sanding it clean. this is located in front of one of the burners..Good luck

  • Bill Allen Jan 19, 2009

    iT COULD BE THAT THE THERMOCOUPLE IS BAD AND NEEDS REPLACEMENT. iF YOU HAVE ANY INDICATOR LIGHTS ON THE BOARD THEY MAY TELL YOU WHAT IS WRONG AS WELL. iT REALLY SOUNDS LIKE A THERMOCOUPLE PROBLEM TO ME BECAUSE IF IT DOESN'T SEND A SIGNAL THAT IT HAS FLAME THEN THE UNIT WILL SHUT DOWN THE FLAME. i WUOLD TRY TO REPLACE THE THERMOCOUPLE IF I DIDN'T WANT TO HAVE SOMEONE SERVICE IT. GOOD LUCK...

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