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Oven will not light, hot surface ignitor is working, is this a safety valve problem?

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Hi, If the oven ignitor is glowing and not lighting the birner, you will need to change the ignitor. Even tho it glows, it is to weak to open the gas valve. This is very common issue.

Posted on Jun 25, 2009

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While the ignitor is glowing, tap on the valve with the handle of a large screwdriver. If the valve opens and the burner lights- replace the ignitor. If not replace the valve-depending on age I will sometimes do both right then.
Eric

Posted on Jun 25, 2009

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The igniter may look like its working but it may not be...when it lights the glow should be a brillient yello...if not and you have orange/yellow replace the igniter...hope this helps...please feel free to comment again if you have further questions.

Posted on Jun 25, 2009

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1 Answer

Ignitor work but burner do not lite


The oven safety valve
(also called the gas valve) is the part that ensures that gas is not released until the igniter has reached the correct temperature needed to ignite the gas. While this part can fail, it is uncommon. If the hot surface igniter does not glow you should first verify that you have voltage to the circuit. This is a live voltage check and should be performed by a qualified person. If voltage is lost at the valve terminals then you should verify the continuity of the bi-metal in the valve using a multi-meter.

The oven burner igniter
commonly known as the hot surface igniter is used in modern gas oven burners to open the gas valve and to ignite the gas. As the igniter draws electric current it will heat to a high temperature and glow, as well as cause the bi-metal in the oven safety valve to warp and open the valve releasing the gas to be ignited. This sequence normally takes about a minute. Igniters come in both flat and round styles and are very fragile. If the burner does not light then you should check the igniter first. If the igniter does not glow at all, then check for power to the circuit. This is a live voltage check and should be performed by a qualified person. If power is present then the igniter may be open circuit and can be checked for continuity with a multi-meter. If the igniter is glowing, but the burner is not lighting, the igniter may be weak and still be at fault because it requires a certain amount of current draw to open the valve. This check requires the use of an amp meter and should be performed by a qualified person. If the igniter is defective then it must be replaced.

Feb 16, 2014 | Kenmore 30464 / 30465 / 30469 Gas Single...

1 Answer

My oven is ten yrs old lately when i push bake then start the timer starts counting backwards and the pilot light comes on but the oven does not get hot. sometimes i can slam the door and it will start...


Sounds to me like your oven is a gas oven that uses silicone carbide ignition. When that ignitor gets aged it gets weak and will not open the safety valve. How it works video:

When you bang on the oven the bimetal will open on a weak ignitor. If yours is dim orange that is another sign of a weak ignitor.

Jun 29, 2011 | Whirlpool Ovens

2 Answers

Ignitor lights up bright, but no ignition,no flame and I don't hear the gas turn on like I normally do. Top burners work fine.


Hello, welcome to fixya ! Based on your description I suspect you have a faulty bake ignitor. This may surprise you, or it may not. I think at first it surprises people when the hot surface ignitor glows but the oven won't lite. Since the ignitor "glows" one figures it would appear to be working, that would be wrong. These ignitor's serve 2 functions, 1) need to maintain a set value to open/activate the gas valve, typically around 3.5amps... & 2) ignite the fuel once said gas valve is open. A poor/faulty ignitor may glow & and even ignite the burner intermittently for moments at a time ( thus giving off some heat but never the set amount or not lite at all ) but yet not reach the needed value to open the gas valve/safety valve consistently nor adequately, hence the need to replace the ignitor. Try this and I'm certain you'll be up & running and as they say " cookin' with gas" ! I'd suggest you should refer to your specific model when ordering the part locally or on-line. The most common hot surface ignitor part is #12400035 and it will work in your Whirlpool too. Try places like repairclinic.com, searspartsdirect.com, APwagner.com etc. Thank's for visiting "fixya" for your stove inquiries. Please take a moment while here to rate the solution provided or let me know if you require further assistance and good luck. macmarkus :)

May 23, 2010 | Whirlpool AKZ159IX Oven

1 Answer

Natural Gas, convection oven won't heat. New flame sensor installed, 1/13/10, digital timer and temperature work heat light is on but unit will not fire up, hot surface igniter works fine. Gas valve??


If the gas valve is on(no continuity) then yeah that is it, keep in mind the ignitor could be weak. I didn't notice where you replaced the ignitor and you say it is working so that means the gas valve has continuity. You need 37 ohms on that ignitor or a total amp draw of at least 3.5 to open that valve.I have a video: HERE

Jan 14, 2010 | Southbend S560DD (Gas) Oven

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

    My kenmore oven igniter doesnt click and there is no gas getting to the oven


    Oven ignitors are not the "clicking" variety - they use a hot surface ignitor and "feed through" to a current sensing gas valve - in short, if the ignitor is going bad, then the gas valve won't open (safety). Try replacing the HSI in the bottom of your oven - do an online search and match up model and serial of your unit to the part. Be careful no to touch or break the new ignitor - VERY FRAGILE!!!

    Aug 31, 2009 | Kenmore Ovens

    1 Answer

    Gas oven does not get hot enough


    You probably have a bad ignitor. Oftentimes the ignitor lights but doesn't draw the proper amps (3.2) to open the safety valve. If you have an amp probe you can test that.

    Apr 07, 2009 | Ovens

    1 Answer

    I just cleaned by hand by magic chef wall oven and now I can't


    Pilotless ignition means that a hot surface ignitor lights the oven burner. It does take a little bit of time to light the burner. Maybe 30 seconds. If you want to make sure it lights take the bottom panel out from the oven and observe the hot surface glow and the burners light. No real danger as the gas valve will only open after the hot surface ignitor has satisfied the gas valve. Let me know how it goes. ken

    Jan 02, 2009 | Magic Chef 9122 Gas Single Oven

    2 Answers

    Lighting an old Frigidaire gas oven


    Sounds as though the pilot light in your oven went out. On the inside of the oven there should be a small hole about the size of a 50cent piece on the floor of the oven. Turn on the gas for the oven, light a matchstick or rolled up piece of paper, stick it into that hole and it should light, monitor the oven for 30 seconds to see if it starts to heat. SAFETY 1st!

    Dec 23, 2008 | Ovens

    1 Answer

    I have a gas oven whirlpool sf3020ekq2 buners work but oven won't


    Sounding like your hot surface ignitor is getting bad. What I would like for you to do is open the oven and take the bottom panel off. This is so you can see the hot surface ignitor. Turn the oven on and look at the hot surface ignitor it is down on the bottom right next to the burner assembly. Does it start to glow and turn cherry red? This ignitor isn't too hard to replace couple of small screws and two wires. Will have to cut the wires so disconnect the unit from the 120 volt plug. Now if it starts to glow and get cherry red hot then the gas valve is sticking and it is the one going bad. That is a little tougher to replace. Turn the gas off at the source and get your wrenches unscrew the gas valve small space so if you want remove the door by just pulling it off the hinges.

    If unit is old and you don't like it anyway maybe santa would be good to you and replace the stove oven. The gas valve is about 60 bucks or so and hot surface is about 20 bucks. let me know how it turns out.. ken

    Dec 16, 2008 | Whirlpool 30" Self-Cleaning Freestanding...

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