What to do if …40If you are unable to remedy the problem by following the above suggestions,please contact your local Service Force Centre.1 Warning! Repairs to the appliance are only to be carried out by qualified service engi-neers. Considerable danger to the user may result from improper repairs.3 If the appliance has been operated incorrectly, the engineer's visit will be chargeable,even during the warranty period.Operating noisesDepending on the material and the processing of the base, the following noises may oc-cur when using induction cooking zones.• Cracking noise (1)when using cookware made of different materials (Sandwich construction)• Whistling (1)when using an individual cooking zone or several cooking zones with high powerswhen the cookware is made of different materials (Sandwich construction)• Humming (2)can occur at high power levels• Clicking (2)during electric switching processes• Hissing, buzzing (3)The device is fitted with a fan for cooling the electrics. A whiring noise can be heardwhen operating the fan which may deviate depending on the performance and maycontinue for a while after the appliance is switched off.The noises described are normal and do not refer to any defects.lights up Unsuitable cookware Use suitable cookwareNo cookware on the cookingzonePlace cookware on the cookingzoneThe diameter of the bottom ofthe cookware is too small forthe cooking zoneMove onto a smaller cookingzoneUse suitable cookwarelights up Overheating protection for thecooking zone has been trig-geredSwitch off the cooking zone.Switch the cooking zone onagainAutomatic switch-off hasbeen triggeredSwitch appliance off. Switchappliance on againand number are displayed Electronics fault Disconnect the appliance fromthe electrical supply for a fewminutes (Take the fuse out ofthe house’s wiring system)If after switching on again,is displayed again, call the cus-tomer service departmentProblem Possible cause Remedy