Before performing any repairs to your electric range you must disconnect the appliance's power supply. To disconnect the power supply, unplug the range from the wall outlet, or turn off the breaker in your home's service panel.
When a component in your range fails, a fault code is often shown on the display, allowing you to pinpoint the cause of the failure. If the fault codes F3 or F4 are displayed, the oven sensor has failed and must be replaced. The fault codes F0, F1, F5 and F6 indicate a failure of the oven's electronic control board.
If no fault code is displayed, it is likely that the heating element has failed. To test the heating element, remove it from the range by removing the screws securing it to the rear wall. Disconnect the wire connectors from the element's terminals and then remove the element from the oven. Use a calibrated multimeter set to the lowest setting to test ohms of resistance to test the heating element. Touch one of the multimeter probes to one of the heating element terminals, and then touch the other probe to the other terminal. If the meter displays a resistance between 0 and 50 ohms, then the heating element is properly functioning. Any other result indicates a faulty heating element.
If the heating element is properly functioning, the problem may lie within the oven sensor. To test the oven sensor, remove the rear panel of the range, which is secured using several screws, and then disconnect the oven sensor wire connector. Insert each of the multimeter probes into the two terminals on the oven sensor wire connector. If the oven sensor has a resistance of between 1,000 and 1,100 ohms of resistance, the sensor is properly functioning. Any other resistance indicates a failure of the oven sensor.