When a residential oven powers on, lights up its control panel, and runs its timer or convection fan normally but fails to produce any heat, the malfunction is typically caused by a burned-out bake or broil heating element, a failed gas igniter (on gas ranges), a broken thermal fuse, or a malfunctioning electronic control relay. If an electric heating element has an internal break, electrical current cannot flow to create heat. You can troubleshoot heating failures easily by inspecting the element for blisters or cracks. You can verify that your corrective action is successful when replacing a broken heating element or a faulty gas igniter restores normal thermal output and brings the oven up to the selected cooking temperature.
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