Geberit MONOLITH PLUS User Manual page 28

EN
When the settings are saved, the orientation light flashes
briefly as confirmation. If the settings are not saved or if no
changes are made within three minutes, the unit automat-
ically exits setting mode without changing the existing
settings.
5
Press and hold the <Odour extraction unit> button for
approx. three seconds to exit Settings mode.
Result
✓
Both indicator lights flash three times. The sanitary
module is once more ready for operation.