Why won't the One Top detect my pot or pan? If proper cookware is not used, the 8th LED on the front of the One Top will flash. The flashing LED means no pot was detected on the cooktop. You will need to place an induction-compatible pot or pan on the cooktop to continue cooking. Note: To learn more, visit Do I need special Cookware? Related articles Do I need special Cookware to use the One Top?