Scratches or dark stains on the glass ceramic have no effect on how the appliance operates.To remove the dirt:1. – Remove immediately: melted plastic, plastic foil, and food with sugar. If not, the dirtcan cause damage to the appliance. Use a special scraper for the glass . Put the scra-per on the glass surface at an acute angle and move the blade on the surface .– Remove after the appliance is sufficiently cool: limescale rings , water rings, fatstains, shiny metallic discolorations. Use a special cleaning agent for glass ceramic orstainless steel.2. Clean the appliance with a moist cloth and some detergent.3. At the end rub the appliance dry with a clean cloth.WHAT TO DO IF…Problem Possible cause and remedyYou cannot ac-tivate the ap-pliance or op-erate it.• Activate the appliance again and set the heat setting in 10 seconds.• You touched 2 or more sensor fields at the same time. Only touch one sensorfield.• The Child Safety Device or the Lock or Stop+Go operates. See the chapter Op-erating instructions.• There is water or fat stains on the control panel. Clean the control panel.A Sound oper-ates and theappliance de-activates.A sound oper-ates when theappliance isdeactivated.You put something on one or more sensor fields. Remove the object from thesensor fields.The residualheat indicatordoes notcomes on.The cooking zone is not hot because it operated only for a short time. If the cook-ing zone should be hot, speak to the service centre.The AutomaticHeat Up func-tion does notoperate.• There is still residual heat on the cooking zone. Let the cooking zone becomesufficiently cool.• The highest heat setting is set. The highest heat setting has the same power asthe Automatic Heat Up function.The heat set-ting changesbetween twolevels.The Power management is activated. See the section Power management.The sensorfields becomehot.The cookware is too large or you out it too near to the controls. Put large cook-ware on the rear cooking zones if it is necessary.What to do if… 27