The oven control board sends voltages to the heating elements—bake and broil—depending on the user input and sensor settings. If one of the control board's relays ends up shorting, the board may send continuous voltage, which means the oven may continue to heat even after it is turned off at the controls. A defective control board must be replaced.
If your oven will not turn off, it’s wasting energy. Fortunately, there is a limited number of possible causes for this kind of problem. Let’s find out why your oven is off but still heating.
1. OVEN CONTROL BOARD
2. BAKE OR BROIL ELEMENT
Damage to the heating elements can also cause issues with the voltage being directed from the control board. An element that has shorted out in this way will often have visible damage, such as holes, cracks, or blistering. If this proves to be the case (which may require a trained technician using a multimeter), the damaged element can be fairly easily replaced.
3. TEMPERATURE CONTROL THERMOSTAT
Oven thermostats sometimes overheat. When that happens, the electrical contacts inside can become welded together—which, in turn, can create a scenario where the thermostat is constantly calling for more heat, even when the oven is turned off. This type of "welded" thermostat likely can’t be repaired, but should be fairly easy to replace.
4. DIALS, KNOBS, AND SWITCHES
If you turn the controls to "off" but your oven is still heating, you may not have turned the controls off after all. In other words, there may be a physical problem with the controls that prevents them from turning all the way to off. Depending on your make and model, you may be able to remove the knobs, clean them out, and replace them to see if the issue is resolved.
OVEN OFF BUT STILL HEATING? WE CAN HELP
If your oven is still heating even after you've attempted some DIY fixes—or you would simply prefer an expert to take a look—all you have to do is book an appointment with our local specialists. We're usually able to get the job done in the first visit.*