29What to do if …3 In the event of any other fault codes that arise,disconnect the appliance from the electricalsupply for a few seconds. (Take out the fusefrom the house’s wiring system.) If the fault isdisplayed again, please call the CustomerCare Department and inform them of the faultcode.If you are unable to remedy the problem by fol-lowing the above suggestions, please contactyour dealer or the Customer Care Department.1 Warning! Repairs to the appliance are only tobe carried out by qualified service engineers.Considerable danger to the user may resultfrom improper repairs.3 If the appliance has been wrongly operated,the visit from the customer service technicianor dealer may not take place free of charge,even during the warranty period.Problem Possible cause RemedyThe cooking zones are not func-tioning.No cooking zone selected Select cooking zone within 10 sec-onds of switching on (Decimal pointlights up)The cooking zones cannot be se-lected / Appliance does not react tothe control panel inputMore than 10 seconds have passedsince the appliance was switchedonSwitch on the appliance again.Select cooking zone within 10 sec-onds of switching onThe child safety device is activatedlDeactivate the child safety device(See section “Child safety device”)The sensor fields are partly coveredby a damp cloth or with liquidRemove the cloth or the liquidSafety cut-out has been triggered Switch on the appliance againThe residual heat indicator is notdisplaying anythingThe cooking zone was only on for ashort time and is therefore not hotIf the cooking zone is supposed tobe hot, call the Customer ServiceDepartment.Er03 is displayed Several sensor fields were touchedat the same time Only touch one sensor fieldEr21 is displayed Safety cut-out due to overheating Let the appliance cool down.Remove cookware.Er25 is displayed(only for 10 seconds) Appliance is incorrectly connectedDisconnect the appliance from theelectrical supply and have it con-nected properlyEr40 is displayed The overvoltage protector has beenactivated (for an incorrect connec-tion see above Er25 or for over-heating of the electroniccomponents see Er21)Separate the appliance from themains for a few minutes (removethe mains fuse).Let the appliance cool down.