Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: armstrong ultra sx 80 furnace
Flame sensor could be dirty. It is located right beside the last burner looks like a thick piece of wire. Take steel wool and gently clean the probe 4 or 5 strokes is all it will take to take off the carbon build up off. Lets eliminate this item and see if it clears up okay. ken
Posted on Dec 21, 2008
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