Miele HR1421 Operating Instructions Manual page 51

Setting Status
  to
 
Display
 ,
brightness
 *
   *
Lighting
 
  
Temperature  to 
regulation
   *
Demo Mode
 
* Factory default
Different levels of brightness can be selected for the
display.
 : Minimum brightness
 : Maximum brightness
The oven interior lighting is on for 15 seconds and then
turns off automatically.
The oven interior lighting is permanently turned on.
The temperature can be modified so that it is slightly
higher or lower than shown.
The higher the level, the higher the cooking
temperature.
Select   and press OK for approx. 4 seconds. When 
   appears in the display the demo mode is
deactivated.
Select   and press OK for approx. 4 seconds. When
 appears in the display the demo mode is active.
The oven can be operated, but the oven heating does
not work. For personal use you do not need this setting.
Clock / Timer
51