Joe W D Sumas , WA February 24, 2017 Appliance: KitchenAid Range-Dual Fuel KDRP407HSS4 Kitchenaid Range Kdrp407hss4: The oven on our kitchenaid dual fuel range stopped working. How to replace Thermal Fuse. Did a little research & determined that the control transformer was the cause of the problem. I also changed the thermal overload as it looked like it had suffered from old age & heat exposure. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours