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Filter size on ultra sx 80 gas furnace - Heating & Cooling

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 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

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  • 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

Therinnaiguy
  • 1420 Answers

SOURCE: i have an americanaire ultra sx 80 furnace that if

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Posted on Jan 04, 2010

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

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Seems to have a short ??????????


HMMMMM, Not hum. Seriously? Call an a/c and heating service out. Ther are too many safety issues in electric an gas service/ repair

May 22, 2009 | 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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