After self cleaning, the upper oven won't heat up, neither the lower element or the broil element. Lower oven still works fine.

SOURCE: lower heating element stopped heating

sorry to here about your trouble ;i suspect the elemant is blown check your manaul some cookers can be reset but again you will have to checkyour manaul on how to do this sorry this time i cant be of more help,adrian

SOURCE: jenn-air ww30430w dual oven, lower oven, lower

Most likely a bad element. Turn off the power to the oven. Remove the racks.
Use a phillips screwdriver or 1/4 inch nut driver to remove the mounting screws at the back of the oven cavity to remove the element. Carefully pull the element out and remove the wires. Do not let the wires fall back into the holes.

Use a volt meter set for continuity. Touch one meter lead to one terminal on the element. Touch the other meter lead to the other terminal. If you get NO reading the element is bad.

A new element will correct your problem.

If the element reads as good you have a wiring problem or a bad control.