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Jenn Air Oven Temperature Not Accurate

JGS8850ADS

The part(s) or condition(s) listed below for the symptom Oven temperature not accurate are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Oven temperature not accurate

Cause 1Igniter

The igniter draws electrical current through the gas valve to open it. As the igniter weakens over time, it takes longer to open the gas valve. As a result, the oven temperature will drop too low before the burner reignites. The oven temperature should not drop more than 40 degrees Fahrenheit before the igniter relights the burner.

Part Testing
Parts
Igniter for your Jenn AirRange/Stove/Oven
Igniter - Part # 949510 Mfg Part # 74007498

Oven ignitor, this item is also referred to as a glow bar. The igniter is mounted vertically on the burner tube. If the oven does not heat check if the igniter is glowing, if so then there is a good chance the igniter is weak and will need repalcement.

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Cause 2Broil Element

The broil element may have burned out. When the broil element is heating properly, it glows red hot. If the element does not glow red, this indicates that the element is not heating. Often, if the element has burned out, it will be visibly damaged. Inspect the broil element for holes or blisters. To determine if the broil element has burned out, use a multimeter to test the element for continuity. If the broil element does not have continuity, replace it.

Parts
Broil Element for your Jenn AirRange/Stove/Oven
Cause 3Temperature Sensor

The oven sensor works in conjunction with the oven control board to regulate the temperature. The sensor regulates the oven temperature by varying its resistance to electrical current as the oven temperature varies. As the oven temperature rises, the oven sensor creates greater resistance. If the sensor gives the wrong amount of resistance, the oven may not bake evenly. On some models, you can recalibrate the oven control up to 35 degrees Fahrenheit higher or lower. Refer to your owner’s manual for instructions on how to recalibrate the oven control.

Part Testing
Parts
Temperature Sensor for your Jenn AirRange/Stove/Oven
Temperature Sensor - Part # 1365 Mfg Part # 12001655

Oven sensor kit, short

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Cause 4Oven Control Board

The oven control board works in conjunction with the oven sensor to regulate the temperature. The sensor regulates the oven temperature by varying its resistance to electrical current as the oven temperature varies. As the oven temperature rises, the oven sensor creates greater resistance. If the sensor gives the wrong amount of resistance, the oven may not bake evenly. Or if the oven control board does not read the sensor resistance correctly, the oven temperature may be inaccurate. On some models, you can recalibrate the oven control up to 35 degrees Fahrenheit higher or lower. Refer to your owner’s manual for instructions on how to recalibrate the oven control.

Parts
Oven Control Board for your Jenn AirRange/Stove/Oven
Oven Control Board - Part # 1009025 Mfg Part # WP74007217

Electronic oven control with wire harness

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