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An expert who has answered 20 questions.
Re: OVEN WILL NOT (GAS) LITE
With the assumption you have a gas range with electric ignition and is fully powered (plugged in); the possible problem may be the "Electric ignitor/Glow bar".
When turning on the oven, do you see a redish (good) or yellowish (not good; replace) glow emitting from the very bottom or the oven/broil area?
There are typically 2 types of electric glow bar ignitors; Round and Square. Ignitors are actually fairly easy to replace, removing 2 mounting screws and cutting/splicing 2 seperate wires together. Is your ignitor "round" (circular - like size of finger ) or "square" (rectangular - like snickers candy bar)
If your ignitor is not coming on at all; this can be a couple things;
Defective Ignitor - Gone completely Bad - Out (Assuming your have full power 110v to ignitor)
Defective Gas Valve - Assist in passing 110V to Ignitor
Defective Control Board / Thermostat: Assist in passing 110V to Ignitor
FYI - As a safety measure, the ignitor needs to "come on and appear solid red" to properly pass power to gas valve; thus opening and allowing gas to pass through the burners and combust.
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You need a new igniter, it may glow, but is probably not drawing the exact amperage required to open the gas valve decisively... You should also check burner tube and orifice for spider webs or other obstructions... Kenmore Range Stove Oven Igniter 316489402
the glow plug may be working as in its glowing,but even so they can seem to be working,but if they are weak they can appear o.k. but wont pass enough current to completely open the gas valve and keep it fully open,thats why it sometimes wont light or if they do the flame is wavering or small and you smell gas,just replace the glow plug
either the gas valve is bad or the ignitor/glow coil is bad,most likely the glow coil as gas valves don't fail,but both are in a series circuit and rely on each other to operate and light the flame,check both with a continuity tester and if they show resistance they are good,but get the specifications on how much resistance on the gas valve and NEVER connect the gas valve alone or directly to 120 volts a.c.
Gas or Electric? If Gas at the bottom of oven where Oven burner is there is a glow plug ,or some might call ignitor. When it get a signal to ignite gas that glow plug gets hot and ignites gas. and that does goes Bad .
Doubt that the glow plug is bad. Gas only needs about 1100 degree F. to ignite using the glow plug method. It really seems as if there may be no gas getting to the burner. If there is no flame, you should be able to smell gas. If there is no gas smell, then I would look for the obvious such as: is the gas turned on?, Does the gas valve on the unit have a safety that is tripped? and so on. A new gas valve may be in order but make sure that it is receiving the proper voltage when the glow plug is on. Lastly, there may be a safety that is malfunctioning. If the unit does not light within a given time, the safety will "Lock Out" the unit so the place doesn't fill up with gas.
Hope this helps and good luck.
i think you probably have a weak ignitor. does the ignitor glow orange? if
it does, or i should say when it does, just tap lightly on the gas
valve and see if that causes the gas to flow into the burner and then
light. you can use the handle of a screwdriver to tap with and it wont need to much force. if
this does work, then just replace the ignitor. when they get weak they
will glow, but wont draw enough current thru the gas valve to allow it
to open. your valve does get voltage but it opens when enough current
draw opens the bi-metal portion of the valve to allow gas to flow.