I have a ge double wall oven model JKP48G0K2WG the upper oven will not heat on bake or broil.the temp on control panel reads 90. the lower oven works 100% for both bake and broil. Thank You for the help, Mike

Hi.

Check the thermal cutoff. Remove the thermal breaker from the oven and use a multimeter set on Ohms to test it. If the part reads open (infinity of Ohms, same as on air), then you need to replace the breaker

Here the part:BREAK THERML
The part is indicated with number 353 in diagram below.

If the thermal breaker is OK it will read zero Ohms or very low impedance. In that case the next part to replace is the thermostat. The thermostat also called temperature sensor or probe, is located inside the oven cavity.Test the thermostat in a similar way to what you did with the breaker. If the thermostat is open at room, then replace it.

Here the part:Oven Sensor
The part is indicated with number 332 in diagram below.

Here the diagram. Click on the picture to enlarge:



Note. I could not locate the exact model number in database, please call the part seller and ensure that parts correspond to the ones used in your model.

Regards.

Ginko.