If the bottom of an electric stove gets hot, smokes, or emits a burning plastic smell after being turned off or left unplugged, it indicates a potential problem with the stove that needs to be addressed promptly for safety reasons. There could be several reasons for this issue:
Heating element or coils: Electric stoves use heating elements or coils to generate heat for cooking. If a heating element is faulty or damaged, it may continue to heat up even after the stove is turned off or unplugged. This can cause the stove's surface to become dangerously hot, leading to smoke and a burning smell.
Control board malfunction: The control board in the stove is responsible for regulating the heating elements and other functions. If the control board malfunctions, it might not turn off the power to the heating elements properly, resulting in continued heating and the issues described.
Wiring problems: There could be a wiring issue within the stove that causes a short circuit or an unintended connection, leading to continuous heating of the elements even when the stove is supposed to be off.
Insulation damage: If the insulation around the heating elements is damaged or degraded, it can cause excess heat to escape and affect the stove's bottom, leading to overheating and related problems.
Thermostat failure: The thermostat is responsible for maintaining the desired temperature in the stove. If the thermostat fails to function correctly, it may not shut off the heating elements properly, leading to overheating.
Accumulated debris: Over time, debris, food particles, or grease can accumulate near the heating elements, causing them to overheat and produce smoke and burning smells.
Regardless of the specific cause, a stove exhibiting these symptoms is potentially dangerous and should not be used until the issue is diagnosed and resolved by a qualified appliance repair technician. Continuing to use a malfunctioning stove can lead to fire hazards, damage to the appliance, and endanger the safety of occupants in the home.
To address the problem, unplug the stove immediately if it is still plugged in, and avoid using it until a professional technician has thoroughly inspected and repaired the stove. It's essential to prioritize safety and have any electrical or heating issues with appliances addressed by professionals to prevent accidents and potential harm.