Demo mode is activated.
On hobs without rotary controls, the demo mode can be deactivated as follows:
Switch the hob on.
Place an induction-compatible item of cookware on the hob.
Press the 0 sensor control on any numerical display.
Then touch the 0 and 2 sensor controls at the same time for 6 seconds.
In the timer display, dE flashes alternately with On (demo mode activated) or OFF (demo mode deactivated) for a few seconds.
On hobs with rotary controls, the demo mode can be deactivated as follows:
Turn the rotary control for the front left cooking zone anti-clockwise and hold.
Turn the rotary control for the front right cooking zone twice briefly anti-clockwise and then turn anti-clockwise and hold until the following appears in the cooking zone display:
dE (demo mode activated)
or
0000 (demo mode deactivated)