Miele KM 452 Operating Instructions Manual page 23

The cooktop has a safety cut-out
feature in case it is not turned off after
use.
If one of the burners is heated for an
unusually long period of time (see
table), and the power settings are not
adjusted, the cooktop will turn itself off
automatically and the residual heat
indicator will light up.
^ If you wish to use the burners once
again, turn the cooktop back on
again in the usual way.
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