8Operating the appliance
OptiHeat Control (3 step Residual heat indicator)
WARNING!
/ / Risk of burns from residual heat!
OptiHeat Control indicates the level of the residual heat.
OPERATING THE APPLIANCE
You operate the hob with the knobs of the appliance that you installed with the hob. The Operating Instructions chapter for this appliance tells how to operate the hob.
When a cooking zone operates, it hums for a short time. This is typical of all ceramic glass cooking zones and does not show that the appliance operates incorrectly.
Automatic Switch Off
The function stops the hob automatically if:
•all cooking zones are off 
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•you cover a sensor field with an object (a pan, a cloth, etc.) for longer than 10 sec- onds. The sound operates some time and the hob stops. Remove the object or clean the control panel.
•you do not stop a cooking zone or change the heat setting. After some time 
comes on and the hob stops. See the table.
Automatic Switch Off times
Heat setting |
| , | - |
| - |
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| - |
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Stops after |
| 6 hours |
| 5 hours |
| 4 hours |
| 1.5 hours | |
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Switching the outer rings on and off
You can match the effective heating surface to the size of the cookware.
To switch on the outer ring touch the sensor field 
/ 
. The indicator comes on. For more outer rings touch the same sensor field again. The next indicator comes on.
Do the procedure again to switch off the outer ring. The indicator goes out.
The automatic heat up
Automatic heat up function sets the highest heat setting for some time, and then de- creases to the necessary level. To switch it on turn the cooking zone knob to the right until you see 
in the display. After that set the heat setting immediately.
