Bake and broiler element come on when bake is selected. Why?

Question edited for clarity and typo.
Question moved to Jenn-Air.

It is a known iss. The fix is here. You need a relay board.

https://www.justanswer.com/appliance/7apwg-jenn-air-oven-turns-broil-element-when-using.html

https://www.google.com/search?q=JennAir+Wall+Oven.+The+broiler+element+comes+on+when+baking

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Try it on broil. If it still does not heat, replace the element.

Hello. I looked carefully at the service manual for your unit--surprisingly, there is no thermal switch inline with the bake/broil elements. Usually, if the bake or broil elements pop, this blows out the thermal switch, killing power to the elements for safety. The main control board can get damaged due to the high current draw during a short-circuit. The part number for the main board is WB27T10008. The overlay(the decorative sticker with the button/names on it) numbers are as follows: almond WB27T10022, black WB27T10023, and white WB27T10021. I hope this helps you!

The bake element
is the heating element that is found at the bottom of the oven. Most electric ovens use both the bake element and the broil element in a bake cycle, with the bake element performing 90% of the heating. If the bake element isn't working, the oven may not heat. To help determine if the bake element is defective you should first do a visual check. If the element is blistered or separated then it should be replaced. If the element appears to look normal, then turn the oven on to a bake function for a minute and then turn it off.

Check the element for signs of heating and if it is still cold then it may be defective. Disconnect the power and then remove the back panel. First check the wires as they may have become loose or corroded. If the element appears to be fine visually, test it for continuity with a multi-meter. If the element is burned or no longer has continuity, it will need to be replaced.

The bake element
is the heating element that is found at the bottom of the oven. Most electric ovens use both the bake element and the broil element in a bake cycle, with the bake element performing 90% of the heating. If the bake element isn't working, the oven may not heat. To help determine if the bake element is defective you should first do a visual check. If the element is blistered or separated then it should be replaced. If the element appears to look normal, then turn the oven on to a bake function for a minute and then turn it off.

Check the element for signs of heating and if it is still cold then it may be defective. Disconnect the power and then remove the back panel. First check the wires as they may have become loose or corroded. If the element appears to be fine visually, test it for continuity with a multi-meter. If the element is burned or no longer has continuity, it will need to be replaced.

your oven uses fboth the broiler element and the oven element during baking. Since you know the broiler element works, you most likely will have to replace the oven element.

It won't bake or broilIf neither the bake nor the broiler heating elements heat, but the range burners still work, the clock may be set for a timed or self-cleaning cycle. Check to be sure the clock buttons and knobs are set properly. If your clock has a knob that says "push for man(ual)", push the knob in and try the baking and broiling elements again. If it still does not operate properly, you probably have a defect in the thermostat, selector switch, or common wiring.

If the oven does not have a separate bake/broil/etc. selector switch, the problem may be with the thermostat. But it's not easy to check the selector switch or thermostat for proper operation. If you suspect a problem in this area, call a qualified appliance repair technician.

• When the food you're baking is done on top but not on the bottom--or when baking just takes far too long to finish--the bake element may be burned out.


You may get fooled into thinking it's working, because the oven is hot inside. But many electric ovens use the broil element, too, during the preheat and bake cycles. So the food may be getting heated only by the broil element, which causes poor baking results.

If the bake element is burned out, replacing it should solve the problem. Otherwise, you need to further troubleshoot the oven's electrical system to locate the defective wire or component.


• When the temperature is consistent but too high or too low, it could be one of several different things. First check to see if the thermostat sensing bulb has come loose from its holder. It could be lying on the floor of the oven or resting on the heating element. This would cause the oven to not heat correctly.


If the thermostat bulb is not dislodged, it's likely that the thermostat or sensor is either mis-calibrated or defective.

Electronic ovens with a digital display use a sensor to monitor oven temperature. To solve temperature problems for these models, you may need to replace the sensor. On some digital-display models, you can calibrate the temperature using the key pad. See your operator's manual for details.

Ovens without a digital display often use a mechanical system for controlling temperature. On many of these units, you can remove the thermostat knob and adjust the knob itself to more accurately represent the actual setting of the thermostat.

If, when you remove the knob, there's a screw on the back of it with a small calibration plate, you can loosen the screw, adjust the plate, then tighten the screw again. If the knob isn't adjustable, and the oven temperature is off by more than 30 to 40 degrees, you need to replace the thermostat to solve the problem.

It won't broil Usually, when an oven won't broil, it's because the broiler element is burned out. The broiler element in an electric oven is the black, pencil-thick tube at the top of the oven. When the broiler is on, the element glows red. This element has an expected life-span of several years. It may last for only one; it may last for many more. When the element burns out, you need to replace it.

When the food you're baking is done on top but not on the bottom--or when baking just takes far too long to finish--the bake element may be burned out.

You may get fooled into thinking it's working, because the oven is hot inside. But many electric ovens use the broil element, too, during the preheat and bake cycles. So the food may be getting heated only by the broil element, which causes poor baking results.

If the bake element is burned out, replacing it should solve the problem. Otherwise, you need to further troubleshoot the oven's electrical system to locate the defective wire or component.

Trying to better define the problem....

Do you have any cuts, holes or "shorting" or tin-foil/aluminum around your bottom bake heat-element? If so, you may need to replace the baking Heat Element. (Ensure you do not use aluminum foil around your heat element to prevent your oven from getting dirty)

To replace your baking heat element, with power off; remove 2 screws securing the bake element. Slightly tug and pull towards you for about 3 inches or so and disconnect the connecting wires at each end. Then completely remove the heat element and install new in reverse manner. Whats' you're model number?

Hi Jeff. You should have a wiring diagram with the range. Check for an envelope on the back of the range, inside the back splash, or taped to the inside side wall of the range if you remove the lower drawer. That all being said, first check to see if the start or stop time knobs on the timer have been pushed in (and possibly turned). If the clock runs, it will clear this out within 12 hours, but on these old ranges often times the clock no longer runs. Make sure these knobs are turned until they have "popped" out or you won't get the necessary voltage where you need it. Secondly, when a bake element burns out, it can cause damage to the electrical contacts in the oven selector switch (part number WB22X5122 ) which can be tested with an ohm meter if you can find the electrical diagram. Also, the oven thermostat (part number WB21X5320 ) can be damaged in the same way. Unfortunately, these parts for these old units are not very cheap.
The little bit of heat you are getting in your oven now is most likely only from the 120 volts going to the broiler element when in Bake. During Bake, your bake element should get 240 volts (until thermostat is satisfied). Setting to Broil should give 240 to the broil element.