27ENWarranty and Service (Continued)What does it mean when the burner does not glow red?• The selected temperature of the cooking zone is maintained by a sensor that cycles the zoneon and off, so the surface cooking area will not always glow red. If you select a low heatsetting, the heat will cycle on and off more frequently than at higher settings. The heat alsocycles on and off at the highest setting.If you request a service call because of an error made in operating the appliance, the visit fromthe customer service technician may incur a charge even during the warranty period.ServiceBefore calling for assistance or service, please check the section “Troubleshooting.”If you still need help, follow the instructions below.Is it a technical fault?If so, please contact your customer service centre.Always prepare in advance for the discussion. This will ease the process of diagnosing theproblem and also make it easier to decide if a customer service visit is necessary.Please take note of the following information.• What form does the problem take?• Under what circumstances does the problem occur?When calling, please know the model and serial number of your appliance. This information isprovided on the rating plate as follows:• Model description• S / N code (10 digits)We recommend that you record the information here for easy reference.Model:Serial number:When do you incur costs even during the warranty period?• if you could have remedied the problem yourself by applying one of the solutions provided inthe section “Troubleshooting,”• if the customer service technician has to make several service calls because he was notprovided with all of the relevant information before his visit and as a result, for example, hasto make additional trips for parts. Preparing for your phone call as described above will saveyou the cost of these trips.