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Jenn-Air JES9860AAB electric Oven Temperature Wanders

Snowgoose

Premium Member
Joined
Apr 15, 2022
Messages
3
Location
USA
Model Number
JES9860AAB
Brand
Jenn-Air
Age
More than 10 years
My old Jenn-Air (2000?) vintage electric oven temperature wanders + or - 30 degrees around the temperature that is set.
Serial number is: 21351533CT. Model number is: JES9860AAB
No error codes are displayed.
Temperature is measured with a bi-metal oven thermometer and an oven meat thermometer (ThermoWorks Chefalarm)
Temperature achieved seems inconsistent and may wander as far as 30 degrees around the set temperature.

I have replaced the temperature sensor. Both the old sensor and new sensor read about 1.080K ohms. Not surprisingly there was no change in the problem.

I am ready to try a new oven control board (WP74009319) but none seem to be available online.

Several companies claim to be able to repair the board for less than $200.

Does this problem sound like a control board issue and do you have any experience with any of the board repair companies?

Thanks
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
That's normal, say you set it at 350, the temp can go to 375 then back down to 325 when the heat comes on again, so the average is 350.:)

Jake
 

Snowgoose

Premium Member
Joined
Apr 15, 2022
Messages
3
Location
USA
Hi Jake
I provided incomplete information. It is not just a wandering issue but that the oven overshoots or undershoots the set temperature and then wanders.
For example, if I set the desired temperature to 425 to cook a Newman's frozen pizza, the oven temp may overshoot to 455 and attempt to maintain that temperature, or it may stop at 380 and wander around that level.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
Anytime!

Jake
 
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