Siemens LC958BB90/03 Mode D'emploi Et Notice De Montage page 36

Operation
Saturation displays
Grease filters
NOTE
36
Intermittent ventilation starts automatically. The display
switches back to idle state after the set time has elapsed.
The saturation of the grease filters can be queried via the
Information button. To do this, the extractor hood must be
switched on.
Press thetbutton.
The saturation display of the grease filters can be reset even
before 100 % is reached.
1. Press the t button again. The settings area is lit.
2. Using the rotary selector, set the saturation display to 0 %.
If the t button is lit and a signal sounds when the extractor
hood has been switched off, the grease filters are 100%
saturated.
1. Clean the grease filters or replace the activated carbon
filter.
2. Set the indicator to "yes".
3. Acknowledge the input by pressing the t button.