Question about Tappan TGF320 Gas Kitchen Range

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The oven won't light.

I replaced the oven gas control valve. Still doesn't light. I am not sure but I think there is no power to the control valve. The tag on the valve says it is 3.3 vac. Not sure where to go from here?

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Jeff, i read your other ? here and 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.
if you have no glow, then its a whole different problem. to be addressed in next comments.

Posted on Jan 15, 2009

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Posted on Jan 02, 2017

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Mod# xfg374lvq stove: Both the oven and the broiler will ignite, but only stay on for a few seconds. It does not try to reignite. Is this the control module?


Most modern ovens use an electronic control board
to control the oven functions. These models will use the control board to operate the oven safety valve on a gas range or oven, and the bake and broil elements on an electric range or oven. If there is no power to the igniter circuit, or the element circuits, then you should check the control board to verify that there is power at the appropriate output relay. These are live voltage checks and should be performed by qualified persons only. If there is no output voltage then the control should be replaced.

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.

The oven sensor: works with the oven control board to regulate the oven temperature. If there is an oven temperature problem, this sensor might be defective. The sensor can be tested by using an ohm meter. As temperature rises, the resistance measurement also rises. The manufacturer of the oven sensor determines the correct resistance, Oven temperature problems can be caused by other things, but this is one of the common causes.
Beware on some models now most of these ovens they are electronic and they are integrated into the control itself
some different sensor ohm readings at room temp. approx 16 ohms at room temperature and at 350?F it is 29~33 ohms.

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.


http://www.partselect.com/Repair/Range-Stove-Oven/Will-Not-Start/



https://www.repairclinic.com/RepairHelp/How-To-Fix-A-Range-Stove-Oven/18---/Oven-won-t-turn-on-





http://www.partselect.com/Repair/Range-Stove-Oven/Will-Not-Start Oven Won Turn on

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You will need to look and see if the igniter is glowing a bright red. If it is weak, the oven will not light. Here is the igniter if you need to order it.

Also check and make sure your getting 3.2-3.6 volts AC to the valve.

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Hello Jim,
Believe it not the igniter is the problem,yes indeed it is coming on yet it is not getting hot enough to allow the gas valve to open. By replacing the igniter with a fresh strong one, the oven will work just fine.

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The temp is controlled by electronics that monitor the oven sensor.
The sensor should ohm out at 1100 ohms.
If it is shirted to frame or open the open temp would not do right and the
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In your case I don't think that is the problem. What i think it is going to be is the ignitor. If it is getting weak it sometimes won't draw enough amps to open the safety bimetal inside the gas valve.
Probably the ignitor is on it's way out.


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Hello,

The problem with your oven is that ignitor is weak and not drawing enough amprage to open the gas valve, the gas you smell was since the ignitor does come on it allowed the gas valve to open a wee bit but since ignitor is weak it wont allow gas valve to open fully. I know you going to doubt that what i'm telling you is correct, i base my diagnosis on my 30 years experience as a appliance repair technician.Replace ignitor and enjoy your baked meal

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