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Problem solving guide
62
Problem Cause and remedy
After the hob has been
switched on, or after
touching a sensor, 
appears in the timer
display for a few
seconds.
The system lock or safety lock is activated.
Deactivate the system lock or safety lock (see
“System lock / Safety lock”).
The hob has switched
off automatically. When
the element is switched
back on, appears
above the On/Off
sensor control.
One or more of the sensor controls are covered, e.g.
by finger contact, food boiling over or an object.
Clean off any dirt and/or remove the object (see
“Safety features” – “Safety switch-off”).
After the hob has been
switched on, appears
briefly in the timer dis-
play. The cooking zones
do not heat up.
The hob is in demonstration mode.
Touch the 0sensor control on any of the numerical
displays.
Then touch the and sensor controls at the
same time until flashes alternately with in
the timer display.
A cooking zone
switches off automatic-
ally.
It has been operated for too long.
You can use the cooking zone again by switching
it back on (see “Safety switch-off”).
A cooking zone or the
whole hob switches off
automatically.
The overheating protection mechanism has been ac-
tivated.
See “Safety features”.
The Booster has deac-
tivated early automatic-
ally.
The overheating protection mechanism has been ac-
tivated.
See “Safety features”.
The cooking zone is not
working in the usual
way on the power set-
ting selected.
The overheating protection mechanism has been ac-
tivated.
See “Safety features”.
Power level 9 is auto-
matically reduced if you
select power level 9 on
two linked cooking
zones at the same time.
Operating both zones at power level 9 would exceed
the permitted maximum power for the two zones.
Use a different cooking zone.
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