Answer Michelle, the error F20 is going to indicate a thermal runaway failure in the upper oven. This could be from a bake WB44X21667 or broil WB44X48685 element being grounded out, the oven sensor WB21X10165 improperly measuring temperature (it should measure around 1100 Ohms at room temperature), or a failure in the oven control WB27X25351. Read More... Answered by AppliancePartsPros.com | Wednesday, January 8, 2025