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American Standard AUD100C936H3 furnace... Ser. L502S6H1G... LP, No gas after hot surface ignitor starts. Tap gas valve, burners ignite. Installed new gas valve, good gas pressure, 25 volts @ gas valve for 2 seconds, hear new gas valve click... no gas release to the burners after the hot surface ignitor glows.

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6ya6ya
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Posted on Jan 02, 2017

  • 182 Answers

SOURCE: I have a 2 year

The board controls the timing

Posted on Oct 18, 2008

  • 85 Answers

SOURCE: I have a problem with

Buy a new ignitor either from the ignitor store online, or your local distributer, Contracter, dealer.. they usually run from 15 dollars to 35. Their simple to change out and deffinite do it yourselfer... Oh and turn off power at breaker panel, you don't need any unexpected surprises!!

Posted on Dec 02, 2008

Therinnaiguy
  • 1420 Answers

SOURCE: furnace amana gui090b30b will not

Are you saying you put your face in the burner box and blow air on the burner tubes? You are a braver man than I. Gas pressure or air adjustment. Get a technician to check your system or shave all the hair on your face and head before you burn it off.

Posted on Dec 05, 2008

  • 659 Answers

SOURCE: furnace ignition

The probable cause is the pressure switch. It's a round disk either silver or black in color. They can stick in either the closed position or the open position depending on what your unit needs to fire. You can take the rubber hose off from the inducer motor and blow lightly and **** in lightly to make sure the switch is free from debris. Then try again and if it continues, then you will need to replace the switch. It can also be a limit switch that is going bad as well.

Posted on Mar 16, 2009

  • 16 Answers

SOURCE: Goodman forced air gas furnace not firing

if your power vent moter is not running you should not have have glowing ignitor.Frist the vent moter must close an air prove switch in series with the idnitor .seems you have a stuck air prove switch.Its the one with a hose attached

Posted on Apr 07, 2009

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1 Answer

When the heat cycle calls for gas there is no ignition is my gas valve bad?


I don't know what kind of furnace you have. But most furnaces have some sort of pilot first than after it is proven than the main gas will come on. Either a standing Pilot with a thermocouple. A hot surface ignition or Spark ignition with a flame sensor. Or a direct fire system where hot surface or spark ignitor start first than all the burners send a 1 sec blast of gas which is proven by the flame sensor if it proves the gas valve stays on.....
In what you have said you have 24 volts to the gas valve and it has not lite. then does the gas valve have a pilot tube???Does it have a thermocouple?? Do you smell gas?? If you don't smell gas then the main part of the valve has not opened. The Pilot valve has to open first and prove before the main gas will come on. I hope this helps. If you still need help repost with the name and model # of the furnace.

Nov 18, 2013 | Honeywell Furnace Gas Valve Sv9501h2409

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

Furnace has automatic ignition pilot light comes on for about 10 seconds then goes back out and furnace blows cold air


Check and make sure you have gas on to the unit and to the gas valve in the furnace.. Check for 24 volts at the gas valve at the furance. Check and make sure the knob at the gas valve is in the "on" position. If you have voltage at the valve than the valve has failed. If you have no voltaged at the valve than the circuit board has failed. One last thing you can check if you do have voltage at the valve. When the hot surface ignitor is glowing orange tap on the gas valve with the handle of a screw diver. Sometimes the valve sticks. Of coarse if this works it will probably stick again. Replace the valve in this case.

Jan 25, 2011 | Heating & Cooling

1 Answer

Ten yr old Goodman residential furnace won't light even though hot surface ignitor glows red for 1 or 2 seconds.


Make sure you have gas on. Tap on the valve as the ignitor glows. The valve may just be stuck. If not- I'm thinking the funace needs a new ignition module.

Jan 17, 2011 | Heating & Cooling

1 Answer

Intertherm gas furnace


It appears your furnace is a downflow furnace. The sensor will be located near the bottom of the furnace. When you first turn it on, you should see a red glow.....this is the hot surface ignitor. Normally, the Hot Surface Ignitor is located on one end of the burners and the Flame Sensor is located on the oppoosite end of the Burners.
For more detailed information, click HERE.

Apr 15, 2010 | Heating & Cooling

1 Answer

I replaced what I thought was a bad igniter.But still had no glow from new igniter. Must be something else.Where do I go from here?


Hello there: The oven bake burner and ignition components are located beneath the oven cavity. In most cases the oven bottom panel can be removed for access (check your owner's manual) but on some models the oven burner has to be accessed from below in the warming or broiler drawer area. If accessing from the top, a 'flame spreader' (flat metal plate) above the burner may also need to be removed to see the burner itself.Many ovens use a single oven burner in which case they only have a single gas valve and ignitor. The same burner is used for both bake and broil functions, the broil usually being in the drawer area below the oven. Higher-end models may have a separate bake and broil burner. On such a system there will be two ignitors, one for each burner. They may also employ a 'dual' gas valve (see illustration above) instead of using a separate valve for each burner.Some range models may have an additional broil burner located at the top of the oven cavity which may be referred to as a 'waist high' broil. If not, broiling usually takes place in the drawer area below the oven, which uses the same bake burner for the broil function. Most gas ranges currently available employ one of 3 basic gas ignition systems; pilot ignition, hot surface ignition system (which uses a 'glow bar' or 'glow coil' - aka an "ignitor") and a spark ignition system. The latter two being referred to as "electronic ignition" systems as they use electricity in one form or another to operate the oven heating system. Only the pilot ignition system has an actual "pilot" (which is a small but real "flame") which might need manual lighting.
If the surface burners of a range are a spark ignition type, the oven IS one of the possible kinds of electronic ignition systems and thus will not usually have a "pilot" which needs lighting. Be aware though that just because the surface burners might light via a spark doesn't necessarily mean the oven uses the spark type ignition system too.
There is one older style of electronic ignition system which does also use an oven pilot but it is very rare and such a system hasn't been used in oven models since the early to mid 70's. It is the 'constant pilot' *electronic ignition* system.


Making Observations
The oven burner's operation will usually need to be directly observed while in operation as the first step to troubleshooting problems.Ignition System Type Links
Ignition System Types:
  • Pilot Ignition
  • Electronic Ignition with Constant Pilot (rare)
  • Electronic Ignition with Glow Ignitor (most common)
  • Spark Ignition System

  • Is there continuity between the oven gas valve's terminals?


    Hot Surface ('Glow Bar') Ignition System (most common)
    This is the most popular system currently used for ovens and is comprised of a control mechanism (whether thermostat or electronic control), the oven ignitor and an oven gas valve.


    What happens in this style ignition system is that the thermostat or electronic control switches power to the oven ignitor and gas valve circuit which are connected in series (one after the other). As power flows through the ignitor it heats and draws current (measured in amperage). Once the oven ignitor draws a specific amount of current the oven valve opens to allow gas to flow to the oven burner where the glowing hot ignitor (glow bar) ignites it. Power must continually flow through the ignitor and oven gas valve for gas to be released into the oven burner to create a flame.

    It should usually only take in the area of 30-90 seconds for the oven ignitor to reach the proper resistance to allow the proper amperage to reach the gas valve to open it and for the ignitor to ignite the gas at the oven burner.

    Dec 30, 2009 | GE Ovens

    1 Answer

    RHEEM RGLE-10EQAGS Gas Furnace - Intermitent. Fans come on, Hot surface Ignitor comes on, then sometimes Gas Valve opens and all is fine, Other times, gas valve doesn't open and Hot surface Ignitor goes...


    The sequence is Igniter comes on, valve comes on, flame sensor senses flame. If no flame is sensed after 3 tries, a lockout occurs. If you have a volt meter, check for 24-27 Volts AC coming to the gas valve, if your getting voltage to the valve but no gas, your gas valve is defective. It could be a intermittent problem, no matter, still a bad valve. if no voltage to valve, defective circuit board. 

    Dec 29, 2009 | Heating & Cooling

    1 Answer

    Carrier Gas Furnace and Hunter Thermostat not working


    Definitely a furnace issue. The gas valve is not opening if you see no flame. I have seen the igniter glow but not send enough voltage to the circuit board to make the gas valve open. If this is the case you should replace the igniter. It is very fragile so please use care when replacing. Check all connections at the circuit board as well as the gas valve. Check your gas supply. Check to see if you get 24 volts AC to the gas valve. If no, replace the circuit board. If yes, replace the gas valve once you confirm that you have gas to it. If you get a pilot flame only, you will need to clean the burners and flame tray that spreads the flame from one burner to the next.

    Dec 06, 2009 | Heating & Cooling

    1 Answer

    I hope that I can get this problem resolved. Can there be a thread started to help me through this? I will try to keep this as short as possible, I have a Ducane Mod. CMPB050C3A Nat. gas furnace. The...


    say that you have the glow bar (Hot surface igniter) working
    if the flame starts make sure you don't trash on the orifice of the burner, you can try to use a piece of wire or someting small to pick on the orifice of the burner, also make sure is not rust bewteen the burners gap where the flame spread to all the burners because if the flame sensor don't feel flame don't stay light up
    hopes this help

    Oct 09, 2009 | Heating & Cooling

    1 Answer

    Furnace will not come on but thermostat is showing information


    turn off power to furnace and open the front panel and see if you can see burners and gas valve and Hot surface ignitor.
    If you can. turn furnace on and watch to see if the ignitor glows.
    Let me know what you find. If it doesn't glow you probably have a faulty Hot surface ignitor.
    If I had make and model number I should be able to find the part

    Nov 16, 2008 | Honeywell Electronic Programmable...

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