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 APPLIANCEYou operate the hob with the knobs of the appliance that you installed with thehob. The Operating Instructions chapter for this appliance tells how to operatethe hob.When a cooking zone operates, it hums for a short time. This is typical of all ceramicglass cooking zones and does not show that the appliance operates incorrectly.Automatic Switch OffThe function stops the hob automatically if:• all cooking zones are off .• 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 cleanthe control panel.• you do not stop a cooking zone or change the heat setting. After some time comeson and the hob stops. See the table.Automatic Switch Off timesHeat setting , - - -Stops after 6 hours 5 hours 4 hours 1.5 hours/ Switching the outer rings on and offYou 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. Formore 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 upAutomatic 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 rightuntil you see in the display. After that set the heat setting immediately.8 Operating the appliance