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My comfortmaker furnace has an electric ignitor. When I turn it on it works but the spark isn't lighting the pilot. What should I do?

Posted by Anonymous on

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Is gas on?
Is it a Good spark? Sparking where it should and subdued?
If good strong spark, the there should be ignition, either No fuel, or Pilot valve of gas valve not opening. If you can confirm proper voltage to pilot valve, then you can ascertain if it's a bad gas valve or ignition module.

Posted on Apr 12, 2015

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I would call a repairman gas is dangerous if not done properly

Posted on Apr 12, 2015

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SOURCE: Williams wall furnace, top vent.

I've replaced a Williams wall gas heater non-electric. The thermostat is connected right and mounted on the wall. But, there's a thick black copper wire on the side of the furnace tagged thermostat. I don't know what to do with it? Where do you connect this wire? When it touches the top screw of the three screws running vertically(where the other wires are connected). The burner lights up and stays on, even if you play with the wall thermostat. Touching the other two screws doesn't do anything. Now, the manual talks about connecting it to the venting wires? Extra wires coming from the top or maybe somewhere else in the wall? I've left it connected to the first screw, ran the heater. But, it never turns off? Any suggestions? Thanks

Posted on Feb 23, 2008

james3751
  • 614 Answers

SOURCE: comfortmaker furnace will not light!!

Make sure you have gas to the unit and the switch on top of valve is turn to on. Can you here the gas valve click? It igniter comes on and a delay and the gas valve should come on. Kill power to furnace to reset control board. Rus Let me know how it goes.

Posted on Nov 17, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: my furnace tries three times then red light blinks once

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).

Your furnace has a diagnostic chart on the reverse of the lower panel incorporated in the wiring diagram. One blink tells you that it is a failure but wont tell you where to start looking.

Posted on Nov 28, 2009

  • 52 Answers

SOURCE: where can i find a manual for an old comfortmaker

Tie red and white wires together after removing thermostat from wall, if unit comes on replace thermostat, if not check limit controls for continuity, Good luck.

Posted on Mar 07, 2010

  • 59 Answers

SOURCE: Pilot lights fine, furnace fires up, when it turns off the pilot goes out

need to have at least 3 feet of vent out of the roof, if it is to low the coll air will cold soak down to the pilot and shut it down.

Posted on Oct 22, 2010

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2 Answers

My comfortmaker furnace has an electric ignitor. It works fine but the spark it creates isn't lighting the pilot. What should I do?


Move the spark source close to the pilot flame area by bending or another method of adjustment.

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Home owner's manual? Troubleshooting section. Gas or electric?
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Hi, If you are having problems with your gas dryer not heatingthe most common problem is that the ignitor goes bad. Even though it glowssometimes it is still not working properly. if you dryer is gas check out this gas no heat tip.... If you have an electric dryer, you can have many differentthings that can go wrong causing the dryer not to heat. check outthis electric no heat tip...

heatman101;
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1 Answer

Why heater coils glow?


It sounds like you're describing one of two things. The hot surface ignitor in a gas-fired furnace, or the resistive heat strips in an electric furnace.

The hot surface ignitor in a gas-fired furnace lights the burners. This ignitor in modern furnaces serves the same purpose as the standing pilot flame did in older furnaces. It provides the required heat to ignite the gas at the burners. Without an ignition source, a gas-fired furnace cannot provide heat. When the ignitor is activated it will glow bright orange or yellow.

The resistive heat strips in an electric furnace actually provide the heat to a home or building. When the furnace turns on, the heat strips are activated and usually glow orange when they reach peak temperature. In almost all cases, the heat strips are not easily seen or accessed without removing covers or panels inside the furnace.

Feb 28, 2011 | Heating & Cooling

1 Answer

Where is the pilot light located on the furnace?


Depending on what kind of furnace you have and how old it is, you may not have a standing pilot. Newer furnaces use electronic ignition systems. Hot surface ignitors and spark ignition.

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1 Answer

How do i light the poilt light on a comfortmaker


depending on how old the unit is varies... if you actually have a pilot assembly you will hold down the pilot valve located on the gas valve adn you would turn dial to pilot and push down red button or knob itself the stick a long match in pilot assembly area and lite...once lighted keep holding down for about 15 seconds to get thermocoupler hot adn then rotate dial to on...if it goes out star toperation again and if continues then the copper thermocoupler next to pilot assembly is dirty or bad... if you don't have a pilot assembly and unit is within last 10 years or so you may have a hot surface ignitor in there and it automatically glows on the call for heat and will lite..if your not seeing it its made of porcelein and could have cracked or went out.... some units also have spark ignition and originates from the board and then will go to a spark module ....repost if you have more questions a/c & heat servicer for 18 years...

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1 Answer

Comfortmaker furnace will not light!!


Make sure you have gas to the unit and the switch on top of valve is turn to on. Can you here the gas valve click? It igniter comes on and a delay and the gas valve should come on. Kill power to furnace to reset control board. Rus Let me know how it goes.

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