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Armstrong air ultra sx 80 diagram

Where is the air filter located

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 306 Answers

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

  • 306 Answers

SOURCE: armstrong ultra sx 80 furnace

You have a dirty flame sensor. Look at the very last burner and you will see a wire going to a ceramic sensor and it looks like a thick wire. Take some steel wool or fine sandpaper and clean the surface off and it will work like a champ.

Let me know how it goes ken

Posted on Apr 15, 2009

heatman101
  • 43501 Answers

SOURCE: We have an Armstrong Ultra

Hi,
The filters should be installed either in the return air vent or on the return air side of the furnace.

heatman101

Posted on Sep 28, 2010

SOURCE: Armstrong ultra sx 80 furnace

Do you check Thermoregulator ,Themostath,Heater?

Posted on Feb 26, 2011

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We have an Armstrong Ultra SX 80 furnace. I can't seem to find the filter on it. Does it take filters and if so, where should they be installed?


Hi,
The filters should be installed either in the return air vent or on the return air side of the furnace.

heatman101

Sep 26, 2010 | Heating & Cooling

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Armstrong ultra sx 80 furnace starts up and runs and then the gas shuts off for a few seconds and then lights backup and causes a small backfire my Ultra sx 80 furnace will ignite then immediately turn...


You have a dirty flame sensor. Look at the very last burner and you will see a wire going to a ceramic sensor and it looks like a thick wire. Take some steel wool or fine sandpaper and clean the surface off and it will work like a champ.

Let me know how it goes ken

Apr 15, 2009 | Heating & Cooling

2 Answers

Armstrong ultra sx 80 furnace starts up and runs and then the gas shuts off for a few seconds and then lights backup and causes a small backfire


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

Dec 21, 2008 | Heating & Cooling

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