Miele CS 1212-1 Operating And Installation Instructions page 38

Problem solving guide
Problem
In the display for a
cooking zone the
 symbol flashes
alternately with the
selected power setting.

flashes
alternately with 
in a cooking zone
display. The
cooktop has
switched off
automatically.
 will appear in the
cooking zone
display.

appears in the
cooking zone
display for a few
seconds after
switching it on.

appears in the
display for a few
seconds after
switching on the
cooking zone.
The cooking zone
does not get hot.
38
Possible cause and remedy
The power setting was reduced because the Booster
function on the linked cooking zone was switched on
(see "Booster").
There has been no pan on the cooking zone for 3
minutes, or the pan is unsuitable.
 Use a suitable pan (see "Pans") or switch off the
cooking zone if you are not using it.
The overheating protection mechanism has been
activated.
 See "Overheating protection".
TwinBooster level II on the linked cooking zone was
switched on.
The demonstration mode has been activated.
 See "Overheating protection".
The system lock has been activated.
 You need to deactivate the system lock (see
"System lock").
The demonstration mode has been switched on.
 Turn the right (outer) control as far as it will go
briefly anti-clockwise twice and then once again
and hold it for approx. 3 seconds.