AEG DD 8695 - Manual (Page 10)

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Grease and charcoal filter maintenance
indicator - DD 8990 - 8861 - 8891 - 8821
This hood is fitted with a device that indicates when it is necessary to
clean the grease filter or the charcoal filter (if the hood is used in the
recirculation version with a charcoal filter).
On delivery, the hood is not supplied with a charcoal filter, so the
saturation indicator will be disabled.
If the hood is to be used with a charcoal filter, the saturation
indicator light must be enabled as follows:
DD 8990 only: Set the hood in “OFF”.
Press buttons 4 and 5 simultaneously and hold them for 3 seconds. At
first only the grease filter LED F will light up, but when the charcoal
filter LED C lights up the saturation indicator will be enabled.
To disable it: Press buttons 4 and 5 again simultaneously and hold
them for 3 seconds, until the charcoal filter LED goes out.
Grease filter LED (F)
LED F will start to flash when it is time to clean the grease filter.
Cleaning will be necessary after 40 working hours. Always comply
with the maintenance instructions for the grease filter.
Charcoal filter LED (C)
The charcoal filter LED C will start to flash when the charcoal filter
needs to be replaced.
This operation is necessary after approximately 160 working hours.
Resetting the saturation indicator
After cleaning or replacing the filters, press button 1 for 3 seconds until
the grease filter LED F or the charcoal filter LED C stops flashing.