Pilot Light Goes Out - HVAC - DIY Chatroom Home Improvement Forum

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Old 07-16-2006, 05:10 PM   #1
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pilot light goes out

i have a old gas furnace.pilot light goes out about once a week.always relights fine.any suggestions?

thanks aaron


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Old 07-16-2006, 05:19 PM   #2
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Does it happen during a very windy day? Could be a backdraft from the metal chimney up on the roof. A strong wind at just the right pressure and direction could cause the pilot light to go out.


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Old 07-16-2006, 06:02 PM   #3
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Years ago I use to have to replace the thermal couple on this heater we had.I had to replace it about every four or five years.
It was pretty easy to replace.
I can not remember if the pilot would stay lit for a bit at all or not.
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Old 07-16-2006, 07:03 PM   #4
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Is the pilot strong or does it flicker?

If it flickers then it may have debris in the tube. Turn off the pilot light gas valve (or the main gas valve for the furnace) and then remove the pilot light gas tube. Blow some compressed air thru it and see if any blockage comes out. Reconnect and see it that helps.

If the pilot light is strong then you may need a chimney cap to keep down drafts from blowing out the pilot light.
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