How the cooking zones work
Single circle cooking zones have one heating element, whilst double circle (vario) cooking zones and extended zones have two. Depending on model, the heating elements may be separated by an isolating ring.
Each cooking zone has overheating protection (a temperature limiter), which stops the ceramic surface from becoming too hot (see "Overheating protection").
When a power level is selected, the heat switches on and the element can be seen through the ceramic surface.
The temperature of the cooking zones depends on the power level selected, and is electronically regulated. This controls the "timing" of a cooking zone, switching the element on and off.
Single circle zone
Overheating protection
Heating element
Double circle zone
Intentional gap
Overheating protection
Outer heating element
Isolating ring
Inner heating element
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