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Earlier I posted about my furnace not staying on. I had my question answered fully, but seeing as it just snowed about 18 inches here I'm not in the position to call anyone to diagnose, so I decided to take a look at my cad cell and to my surprise it is covered in soot. Now mind you it's directly in front of the draft door where you look at the flame (older model furnace) because it wasn't working correctly down in the transformer where I believe these are on newer model furnaces.

Is there any other way to get this to work with what I have here? Going out isn't an option and the old stack switch is no longer an option either. It's an old GM furnace from the mid 60s I believe still running strong apart from this issue.

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Is this an older unit that had a stack control that someone removed and now has a cad cell that is not supposed to be there, and is mounted somewhere where it is not supposed to be? If this is the case, I can not in good faith even try to answer your question. If this is what you have, and by your writing I believe it is, it is time to call a service company that specializes in oil fired units and have them correct your problem. If this is not what you have, I apologize for being so blunt, and ask that you explain in better detail your problem.

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    I think this shod have been posted as a comment and not a answer since it's seaking more answers than giving. – HazardousGlitch Dec 11 '18 at 12:37
  • That is exactly what I have, the HVAC company I called are the ones who done it... They specialize in Oil & Gas – user92481 Dec 11 '18 at 14:20
  • Send a picture of the location of the cad cell mounting place relative to the burner and furnace. – d.george Dec 12 '18 at 11:03

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