The failure of the function key of the electric frying pan is generally unrelated to the display screen. The display screen is used to display the working state of the electric frying pan, set recipes and other information. If the function key fails, it may be caused by the failure of the key itself, which has nothing to do with the display screen. It is recommended that you check whether the function keys are loose, worn or damaged. If the function key is seriously damaged, it may need to be replaced or repaired. You can contact the after-sales service center of electric frying pan for consultation and solution.