ETNA AK2102DA Mode D'emploi page 74

USE
"Door open" indication (for refrigerators with freezer)
A
The "door open" indicator (A) at the end of the freezer door indicates if
the door is shut properly.
• Door not shut properly; indicator is visible
• Door shut properly; indicator is not visible
Always make sure that the freezer door is shut properly. This prevents
food in the freezer from defrosting and causing excessive ice formation.
It also prevents unnecessary energy consumption.
EN 14