16Care and maintenanceClean the hob after each use in order to avoid damaging thesurface and to prevent the formation of baked-on depositswhich are difficult to remove. Before cleaning, make sure thecooking zones are switched off and that the residual heatindicator (“H”) is not displayed.• DO NOT clean the hob with a steamcleaner!• Periodically check for dust under theappliance, near the cooling air inlet or theoutlet openings. This could hinder theventilation and cooling of the electronicmodule and decrease the effectiveness of thehob.To clean the hob, proceed as follows:1. use a soft clean cloth, absorbent kitchen wipes or aproprietary cleaner for glass ceramic hobs. Do not useabrasive sponges and/or metal scouring pads.2. Food spills should be cleaned off before they bake ontothe glass ceramic surface. Sugar and foods with a highsugar content damage the glass ceramic surface and mustbe immediately removed using a scraper for glass. Glassscrapers must be handled with care.3. Remove any stubborn food residues with a scraper orproprietary detergents.4. Salt, sugar and sand can scratch the glass ceramic hob:clean up any such spills on the hob immediately.Troubleshooting Guide• Before contacting After-sales Service:• read and follow the instructions given in the section“Operating instructions”.• Connect the hob to the electricity supply and check that thesupply has not been shut off.• Clean the hob and dry it thoroughly.• If, when the hob is switched on, alphanumeric codes appearon the display, consult the following table for instructions.WARNING ! If you are unable to turn the glass-ceramic hob off after using it, disconnect it immediately fromthe power supply.After-sales ServiceBefore contacting After-sales Service:• Try to solve the problem (see “Troubleshooting Guide”).• Switch the appliance off, wait 30 seconds then switch it onagain. to see if the fault persists.If after the above checks the fault persists, contact the nearestAfter-sales Service.Always provide:• a brief description of the fault;• the exact type and model;• the service number (number after the word Service on therating plate. “See figure in the next page”) is located on theunderside of the cooktop or on the warranty booklet;• your complete address and phone number.If any repairs are required, please contact an authorized After-sales Service as indicated in the warranty.WARNING! Failure to comply with theseinstructions may compromise the safety andquality of the product.MAINTENANCEERROR CODE DESCRIPTION POSSIBLE CAUSES REMEDYThe hob switches offand after 30 secondsemits an acoustic signalevery 4 secondsContinuous pressure oncontrol panel area Water or utensils on control panel Clean the control panelC81, C82The control panel switches offbecause of excessively hightemperaturesThe internal temperature ofelectronic parts is too highWait for the hob to cool downbefore using it againF42 or F43 The connection voltage iswrongThe sensor detects a discrepancybetween the appliance voltage andthat of the mains supplyDisconnect the hob from themains and check the electricalconnectionF12, F21, F25, F36,F37, F40, F47, F56,F58, F60Call the After-Sales Service and specify the error code31902052GB.fm Page 16 Wednesday, September 3, 2008 4:05 PM