If the bottom of your oven is getting hot when it's not turned on, there might be a few possible reasons for this phenomenon:
Residual Heat: After using the oven, it retains heat for a while, even after turning it off. The oven walls, baking elements, and oven floor can stay hot for some time as they gradually cool down. This is normal and expected, but the duration of residual heat can vary depending on the type and insulation of the oven.
Oven Insulation: Some ovens have better insulation than others. Ovens with superior insulation will retain heat more effectively, which means the outer surfaces of the oven, including the bottom, will remain warmer for a longer period after use.
Incorrect Calibration: In certain cases, the oven's temperature calibration might be off. This means that when you set the oven to turn off at a specific temperature, it may actually remain slightly warmer than indicated. If you suspect this might be the case, you can use an oven thermometer to check the actual temperature inside the oven.
Malfunctioning Components: In rare instances, a malfunctioning thermostat, heating element, or electronic control board could cause the oven to generate excessive heat, even when it's not supposed to. This situation would require a professional inspection and repair to ensure safety and proper functioning.
If you notice that the bottom of your oven stays hot for an unusually long time after use or if it becomes excessively hot without any apparent reason, it's essential to have it checked by a qualified appliance repair technician. A malfunctioning oven can pose safety risks and may lead to further issues if not addressed promptly.