Gaggenau CI 491 602 Notice D'utilisation page 11

Empty pans or pans with a thin base
Do not heat up empty pans, or use pans with a thin
base. The cooktop is equipped with an internal safety
system. However, an empty pan may heat up so quickly
that the "automatic switch off" function may not have
time to react and the pan may reach very high
temperatures. The pan base could melt and damage
the cooktop glass. In this case, do not touch the pan
and switch the cooktop off. If the cooktop fails to work
after it has cooled down, please contact the technical
service.
Pan detection
Each element has a minimum limit for detecting pans,
which varies depending on the material of the pan you
are using. You should therefore use the element that
best matches the diameter of your pan.
Automatic detection on double or triple cooking
elements
These elements can detect different pan sizes.
Depending on the material and properties of the pan,
the element will adapt automatically, and will turn on
single zone or the entire element, supplying the
proper power to obtain good cooking results.
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