
Operating concept
48
Instructions for use Fabius plus SW 3.n
LED indicators
There are several LED indicators on the front of
the device.
LEDs for operating status
– If the device is connected to the mains power
supply, the mains power LED (A) is lit.
– In addition, the standby key (B) and all keys of
the ventilation modes (C) have small LEDs that
light up when the respective mode is active.
LEDs for alarm status
Fabius has alarm LEDs that signal alarms and
indicate the alarm priority. Further information in
chapter ''Alarms''.
Alarm LEDs
– Red LED (A) flashes: indicates a warning
– Yellow LED (B) flashes: indicates a caution
– Yellow LED (B) lit constantly: indicates a note
– Red LED (C) flashes: indicates low O
2
supply
2541
1
A
B
C
2541
1
A
B
C