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Gas Oven Flame Constantly on High

My gas oven flame is constantly on high regardles of whether the setting is turned down low. Can you advise the likely cause?

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Re: Gas Oven Flame Constantly on High

I belive that the thermostat to the oven isnt working properly.The t-stat bulb sits inside the oven on the wall and this is what senses the temp in the oven.If its out of place or the t-stat is bad the oven will just keep heating.hope this helps let me know.HAPPY HOLIDAYS!!

Posted on Dec 03, 2007

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Can I adjust the regulator to lower the flame?

Hello Douglas;

My name is Peter. I am a retired field service appliance technician.

What bothers me is that changing these components increased your flame size?

1.) Make sure you have the correct gas safety valve. These valves are preset to inches of water column.

2.) The ignitor has nothing to do with your flame size. What happens is the oven thermocouple controls your oven temperature. When your oven get about 40 degrees above the set temperature, the ignitor and controlling gas components will shut down. When your oven temperature falls below the set temperature the ignitor and gas components will turn back on. There are ovens called accurate, which are expensive and do not have a 80 degree swing.

3.) Ok. Gas regulator. It is adjustable. Generally you have about a 7" water column pressure going into the regulator and 1" to 4" water column pressure coming out.

At the top of the gas regulator you have a long stem. Inside this stem is a shaft with a spring at the top and a valve at the bottom. In between is a rubber diagram which controls the valve based on the gas inlet and outlet pressure.

4.) Adjust. Turn the gas supply off to the range. Turn on the oven and gas burners to bleed the gas from the system.

There is a slot at the top of the stem. With a flat head screw driver, turn the stem top 1/8 of a turn counter clockwise to reduce the regulator outlet pressure. Turn the gas supply back on to check the flame. You may have to repeat this process to get your desired flame.


Mar 03, 2016 | Frigidaire Kitchen Ranges

1 Answer

My top [gas] oven will not heat. The ignitor lights. The gas strip has small blue flames lit along it. However, no matter what i turn the oven up to the flame will not increase.

Gas oven burners are usually a variable gas flow. When on high, the gas valve is fully open and the flame is high. As the heat increases in the oven, the flame reduces in size until the burner is running on whats called "bypass rate" or "maintenance rate" This is the smallest flame the burner can operate on without going out. I would suggest that the thermostat gas valve is faulty and not fully opening. It is also possible that the thermocouple may be faulty. This is a solid piece of wire which is usually situated in the flame path above the burner and connects to the gas valve and regulates the flame. It also triggers the gas valve to turn off , if no flame is present. I would try that first. A lot cheaper than a gas valve. In Australia, you have to hold a Gas service Licence to do this work.

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The reason the flame in the oven is so small and takes for ever to heat up is because the oven igniter is weak and can not open the gas valve very much so hardly any gas flows resulting in a low flame size. By replacing the oven igniter the flame will be full size and heat quickly.


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If you are talking about the little flame that is supposed to be burning at all times then you need to go to a hardware store and purchase a thermocouple. It is a small copper tube that sense's the flame. When working it will constantly burn a pilot flame so that when you turn on the oven it will ignite the gas in the burner. Once the burner is lit it will stay lit until the oven reaches the desired temperature. Replace the THERMOCOUPLE.

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