15What to do if …3 In the event of any other fault codes that arise, disconnect the appli-ance from the electrical supply for a few seconds. (Take out the fusefrom the house’s wiring system.) If the fault is displayed again, pleasecall the Customer Care Department and inform them of the fault code.Problem Possible cause RemedyThe cooking zones are notfunctioning.No cooking zone selected Select cooking zone within10 seconds of switching on(Decimal point lights up)The cooking zones cannotbe selected / Appliancedoes not react to the con-trol panel inputMore than 10 seconds havepassed since the appliancewas switched onSwitch on the applianceagain.Select cooking zone within10 seconds of switching onThe child safety device isactivated l Deactivate the child safetydevice (See section “Childsafety device”)The sensor fields are partlycovered by a damp cloth orwith liquidRemove the cloth or theliquidSafety cut-out has beentriggeredSwitch on the applianceagainThe residual heat indicatoris not displaying anythingThe cooking zone was onlyon for a short time and istherefore not hotIf the cooking zone is sup-posed to be hot, call theCustomer Service Depart-ment.Er03 is displayed Several sensor fields weretouched at the same time Only touch one sensor fieldEr21 is displayed Safety cut-out due tooverheatingLet the appliance cooldown.Remove cookware.Er25 is displayed(only for 10 seconds)Appliance is incorrectlyconnectedDisconnect the appliancefrom the electrical supplyand have it connectedproperlyEr40 is displayed The overvoltage protectorhas been activated (for anincorrect connection seeabove Er25 or for over-heating of the electroniccomponents see Er21)Separate the appliancefrom the mains for a fewminutes (remove the mainsfuse).Let the appliance cooldown.