Miele KM 5987 Operating And Installation Instructions page 24

Operation
Activating Booster I
^ If necessary, switch on the desired
cooking zone.
^ Touch the B sensor switch of the
relevant cooking zone.
I will appear in the cooking zone
display, and the Booster function
indicator light will also come on.
Activating Booster II
^ If necessary, switch on the desired
cooking zone.
^ Touch the B sensor switch of the
relevant cooking zone.
I will appear in the cooking zone
display, and the Booster function
indicator light will also come on.
^ Touch the B sensor switch again.
II will appear in the cooking zone
display.
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Deactivating Booster
The Booster function may be switched
off early.
^ Touch the B sensor switch of the
corresponding cooking zone
repeatedly until the indicator light for
the Booster in the display goes out,
or use the - sensor switch for the
cooking zone in question.