Kristine Y Hales Corners , WI May 02, 2016 Appliance: Jenn-Air Electric Wall Oven WW27430BC Jenn-Air Oven Ww27430bc: The heating element shorted out. How to replace Bake Element (Lower Oven). Ordered the part on AppliancePartsPros.com and watched a video on line on how to replace it. Once the part came we were able to remove the old element and install the new element in just a few minutes. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes