Miele KM 456 Operating Instructions Manual page 34

Problem solving guide
... the hob switches off while it is in
use and a residual heat indicator or a
flashing F appears in the display for
at least one of the cooking zones and
at the same time an audible tone
sounds
One of the cooking zones has probably
been on for too long, or one of the
sensors may have been covered over
(see "Safety switch-off").
... the heating switches on and off at
the highest setting on one of the
cooking zones
The overheating protection mechanism
has been triggered (see "Overheating
protection").
... the food in the pan hardly heats up
or does not heat up at all when the
Auto heat-up function is switched on
This could be because:
– the pan is not conducting heat
properly.
– there is too much food in the pan.
Select a higher continued cooking
setting next time, or start cooking at the
highest setting and then turn down to a
lower setting manually later on.
34
... the sensors are over sensitive or
do not react at all.
The sensitivity level of the sensors has
changed. It can be corrected as
follows:
– Make sure that there is no direct light
(from the sun or from an artificial
source) falling onto the hob and that
the surrounding area is not too dark.
– Make sure that there is nothing
covering the sensors or the hob.
Take any pans off the hob and wipe
away any food deposits.
– Interrupt the power supply to the hob
for approx. 1 minute.
Reconnect the hob to the electricity
supply. The electronic unit will reset the
sensitivity levels of the sensors.
If this action does not solve the problem
please call the Miele Service
department.