If your oven is not properly programmed then you need to check the electronic control board or membrane switch’s condition. The keypad or the membrane switch can be found on the control board.
There are some models that have a separate switch. A replacement is needed in case the keypad is broken.
Over time, your electric coil burners will become worn out, especially if you frequently use your cooktop. Common signs of damage include blisters, bubbles, or cracks on the coils. Unfortunately, there is no way for these coils to be repaired. Instead, you will need to invest in new electric coils for your cooktop. Be sure to purchase coils that are the proper size for your unit’s burners, as loose coils can result in a host of cooking issues and safety hazards.