Operating Instructions25What to do if ...Rectifying faultsIt is possible that faults have been caused by a minor error, which youcan correct yourself with the help of the following instructions. Do notattempt any further repairs if the following instructions do not help ineach specific case.1 Warning! Repairs to the appliance are only to be carried out byapproved service engineers. Improperly effected repairs may result inconsiderable risk to the user. If your appliance needs repairing, pleasecontact your specialist dealer or customer service.What do I do if ....... the cooking zones do not work?Check whether– the mains fuse (fuse box) is intact or the circuit breaker (at thehousehold fuse box) has tripped. If the circuit breaker trips or thefuse blows several times, please call an approved electrician.– the appliance has been properly switched on,– the control indicators in the control panel are on,– the correct cooking zone has been switched on,– the cooking zones are set to the desired heat setting for cooking (seesection “Cooking”),– the cooking zones have been switched off by the safety switch(see section “Safety functions”)..... the cooking zones cannot be switched on?Check whether– the control panel is locked (see section “Locking the control panel”).– more than 10 seconds have elapsed between operating the On/Offbutton and switching on the desired cooking zone, (see section“Switching on the appliance”).– the sensor fields are partially covered by a damp cloth or with liquid..... the display suddenly changes to j or h for residual heat?Check whether– the On/Off button has been operated accidentally.– the sensor fields are partially covered by a damp cloth, liquid or simi-lar– the safety switch has been activated..... after switching off the cooking zones, neither j nor h for