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Old 12-21-2011, 08:34 AM   #1
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Trane gas unit


Model # NUG1125UK03 Serial # 894953184 this air handler is a natural gas system. When it is calling for heat the flame comes on for one second then cuts right off and keeps repeating itself.

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Old 12-21-2011, 08:41 AM   #2
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Clean flame sensor. Its a small rod in line of burner. You can clean with fine sand paper or scotch bright pad

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Old 12-21-2011, 08:42 AM   #3
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It's not an air handler, it's a natural gas furnace. Air handler refers to a single piece (evaporator, blower and electric heat strips) in one casing.

Clean the flame senser. Google image "residential furnace flame sensor" if you want a pic. It will be located on the furnace in the burner compartment. It will have one wire going to it and the rod itself will be thin and round and in most cases bent like an L.

Remove it.

You can use one of those green, rough dish scouring pads and remove any built up residue on the flame senser.

They say to not use sand paper. Good luck.
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Old 12-21-2011, 08:45 AM   #4
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They say not to use rough grit sand paper.
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Old 12-21-2011, 08:50 AM   #5
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Quote:
Originally Posted by Doc Holliday View Post
They say not to use rough grit sand paper.

Yes thats true, but i have been using emory cloth for 30 years and never failed me yet.
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Old 12-21-2011, 08:54 AM   #6
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The only sand paper I carry is the rough grit roll for copper pipe. Never used it on a flame sensor.

I carry a green dish scouring pad for that and that has never failed me.
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Old 12-21-2011, 08:55 AM   #7
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They worst then to clean sensor is a dollar bill ( for all jokers all currency) Lot of people had touch that money and have too much oil on it from dirty hand. Just thank about that money coming from a strip club full of dirty crap
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Old 12-21-2011, 07:55 PM   #8
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Trane gas unit


I've use the open cloth sand paper after its worn down too much to sand new piping or sometimes just a wire brush. Never had a problem with faster than normal sensor coating or decay and my clients are mostly the same since 82.
I thought the dollar story was funny because, Yes!, why would you use sweaty paper.
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Old 12-21-2011, 09:17 PM   #9
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Trane gas unit


Thats a icp not a trane model number
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Old 12-21-2011, 09:39 PM   #10
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I use steel wool never failed me yet....

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