Miele KM 452 Operating Instructions Manual page 13

If the cooktop is too brightly lit or
shaded the touch controls will not
function properly. The cooktop will
automatically,
– reset after every power failure.
– reset during use in response to
changing light conditions.
If the child safety lock indicator lights or
numbers appear in the timer displays,
the automatic reset could not be done
and needs to be performed manually.
^ Make sure no direct light (sun or
artifical) beams on the cooktop. The
surrounding area of the cooktop
should not be completely shaded or
brightly lit either.
^ Make sure the cooktop and the touch
controls are not covered. Remove all
pots and pans and clean the cooktop
if necessary.
^ Trip the circuit breaker to the cooktop
or turn off the power main for 1
minute.
The touch controls will automatically
reset when the power is restored.
If the problem persists, call Technical
Service.
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