Thank you for your feedback!
Why Do the Electric Cooktop Elements Cycle On and Off?
The radiant burners on your smoothtop cooking surface are designed with a limit switch to prevent the burners from over heating. It is normal for the burner(s) to cycle on and off during use to maintain the proper temperature. When the burner control is set on a lower setting, the burner will be "off" for a longer period of time than when the control is set on a higher setting.