What is the automatic time limitation feature on the cooktop?

The automatic time limitation function is triggered if an element is used for prolonged periods without any changes to the settings being made. When activated, the element stops heating and ‰ along with the residual heat indicator flash alternately in the display. Pressing any symbol clears the indicator and allows the element to be reset; the time before activation depends on the selected heat level and ranges from 1 to 10 hours. (Page 21, 30)