8.1
LED displays
The LEDs have the following functions:
LED Color
Function
State
Meaning
4
green
operation
off
system is without power or not ready for opera-
tion
blinking*
access level 3 is active
on
system is ready for operation
5
yellow
shutdown
on
there are shutdowns present
6
red
extinguishing
system trig-
gered
flashing** one detector has released. The other one is still
idle (Pre-alarm)
on
the second fire detector has released (Fire alarm)
7
red
extinguishing
system
released
blinking*
the output for tank triggering was activated
on
the discharge of the extinguishing agent was
detected by the sensor at the tank within 5 sec-
onds of triggering
8
yellow
failure
blinking*
not off in connection with the operation LED:
there is a failure in the energy supply
blinking*
off only in connection with the operation LED:
outage in the central control and/or no communi-
cation between central control and control panel
on
there is at least one failure message present (not
including energy supply failure)
9
yellow
blocked
on
the triggering of extinguishing is blocked
* LED is alternating 500 ms on / 500 ms off
** LED is alternating 200 ms on / 800 ms off
8.2
Buttons
The system is operated via four buttons on the front of the system. The function of
the buttons differs depending on whether the system is in
“Message display”
state
(basic state) or whether the control menu is active.
Display and control elements
Operating Instructions / DET-AC III Master / 916005 / 11-2022 / en_US
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