Gas igniter glows but sometimes the gas ignites and sometimes it don't

I recently had a problem with my gas oven, where I could see the igniter glowing but the gas was not coming on, just like your problem. I found out that the igniter needs to draw a certain level of current to allow the gas valve to open. Although I could see mine glowing, it had broken down enough over time to where the current draw was no longer enough. And the igniter is the "weakest link" in the system.
Replace the igniter. It worked for me!

I recently had a problem with my gas oven, where I could see the igniter glowing but the gas was not coming on, just like your problem. I found out that the igniter needs to draw a certain level of current to allow the gas valve to open. Although I could see mine glowing, it had broken down enough over time to where the current draw was no longer enough. And the igniter is the "weakest link" in the system.
Replace the igniter. It worked for me!

Hi,

You may even see the orange "glow plug" (called a hot surface igniter) glowing orange and so assume that it's OK. Not necessarily!! You have to measure the current/amp drawn by the igniter and compare it to this repair sheet before you can say it's OK or not. The gas valve has a bi-metal that open when a certain amount of current flows through it to heat it up. The igniter is wired in series with the gas valve. As the igniter gets older or weaker, it's resistance increases to the point where not enough current is flowing to the gas valve bimetal to open it up. As a result, the gas valve never opens up. BTW, a common symptom of the early stages of this problem is erratic temperature control in the oven due to delayed firing of the bake burner while cooking.

The hot surface igniter will not come on - check igniter with a ohm meter, you should have continuity through the glow bar, the glow bar can also crack = new igniter time. The glow bar comes on but the main burner will not light - you should have an amp probe to check properly, but often this is a hot surface igniter problem. The hot surface igniter often looses it's ability to get hot enough to open the gas safety valve. The safety valve can fail, but most times it is just a bad hot surface igniter. The hot surface igniter can also quit part way through cooking , in other words the oven may cycle a couple of times and then it just sits there with the red glow from the igniter. See this service sheet for the proper way and amp readings for the hot surface igniter system. Hot surface igniters do weaken and will eventually generate less heat than they normally could. When this happens they can still allow marginally correct current to flow to the oven gas valve for it to open but not get quite hot enough to ignite the gas burner immediately. When this happens, gas released into the oven can sometimes build up to the point where when finally ignited, the amount of gas lit can cause a small explosion inside the oven or cause an odor of gas with out the oven working. Yes, your glow bar igniter can glow orange-red and still be bad!! How a common gas valve works - click here.

Let me know,if needed further assistance.

Hope i helped you.

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Hello there:
Hi,

When you turn the oven on, open the oven door and look down at the bottom and see if its glowing red, it should glow red for about 45-60 seconds then you should hear the gas ignite. If the gas doesn't ignite, then your igniter glow bar is bad.

Here's the oven glow bar igniter for your model:
Manufacturer's Number: 74007498

74007498

Hello- You will need to have the Coils replaced, they are not holding the valve open consistently, it is a fairly common issue and presents itself as you describe. The parts are fairly inexpensive but you should have a Tech out to change them for you. These are great dryers and I would have the Tech look through it while it's opened up...drum wheels and belt should be checked for ware. Hope this helps, best regards.

call gas engineer asap........................

it could be the igniter or glow coil as it is sometimes called. if it is glowing orange in color it may only be igniting once in a while as it is on it's way out. the igniter needs to glow white hot in order to light the gas every time.

Range Oven Temperature Sensor Part Number WB20K0004 Sears PartsDirect
This will be why the oven acts up. The broiler doesn't rely as much on this as the bake part does. Replace this and it should fix your problem.

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

How old is the unit? Sometimes the igniter can glow but if it isn't drawing the right amount of power to open the gas valve then that is the safety that is built into the oven... So unless the power requirement is meant gas valve will not light. Even though the hot surface igniter is glowing red hot. chances are the igniter is bad. Let me know what turns up. ken

hI YES THE COILS IS WHAT YOU HAVE TO CHANGE thANKS FOR THE QUESTION tHE APPLIANCS DOC