William M Poteau , OK May 13, 2016 Appliance: Jenn-Air Electric Wall Oven WW27210W Jenn-Air Oven Ww27210w: Heating element malfunctioned burnt a hole in the coil. How to replace Bake Element (Lower Oven). Very simple procedure. Removed a couple screws, unplugged the 2 oven wires from the old coil and attached the 2 oven wires to the new coil and put back the 2 screws that holds it to the wall of the oven, done. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes