Atag CU1050SMR Notice D'utilisation page 35

YOUR BUILT IN UNIT
Led status bar on built in unit
1 2 3 P
1 2 3 4 5 6 7
1. Fan level 1
2. Fan level 2
3. Fan level 3
4. Fan intensive level
5. Timer indication
6. Clean air indication
7. Filter saturation indication
EN 5