17Operating the appliance en-usTurning on1. Set the required heating mode using the functionselector. The chosen heating mode and the defaulttemperature are displayed.2. If you want to change the default temperature:set the required temperature with the rotary selector.The preheating symbol ’ appears on the display. Thebar continuously shows the preheating status. When theset temperature is reached, a signal sounds and thepreheating symbol ’ goes off.Note: The oven interior lighting stays switched off at atemperature setting below 160° F (70°C).Switching off:Turn the function selector to 0.Quick heatWith the "Quick heat" function, your appliance reachesthe desired temperature particularly quickly in the topheat, bottom heat, and top/bottom heat types of heating.To ensure an even cooking result, do not place your foodin the cooking compartment until "Quick heat" iscomplete and the ’ heat-up symbol goes out.Note: The "Quick heat" function is preset in the factorysettings. In the basic settings, you can select ’ Quickheat or “ Heat-up.~ "Basic settings" on page 34Safety shut-offFor your protection, the appliance has a safety shut-offfeature. Every heating operation is switched off after12 hours if the appliance is not operated during this time.A message appears in the display.Exception:programming with the long-term timer.Turn the program selection to 0, after which you canoperate the appliance in the manner to which you areaccustomed.