9
Messages display
Personnel:
n
Person in charge of the system
Messages are shown on the display for the following states.
Message
Cause
Necessary measure
State OK
● System in normal range.
None.
Extinguishing
triggered
● Extinguishing was activated due to a
fire.
Inform service, installation of a
new tank system.
Fire
● Fire is detected.
None.
Manual
release
● Manual release.
Inform service, installation of a
new tank system.
Failure manual
release
● Wire break or short circuit on the
manual call point line.
● Short circuit or wire break at the
manual call point e.g. wire not con-
nected.
● Terminating resistor is missing, if no
manual call point is intended.
Check the manual call point con-
nections Where applicable connect
wire or insert terminating plug. Ter-
minating resistor manual call point
not present (1.8 kΩ), see descrip-
tion manual call point
Fire alarm
detector 1
● Fire is detected.
None.
Fire alarm
detector 2
● Fire is detected.
None.
Blocking by
door cont.
● Extinguishing system is blocked by
the door being opened.
Close the door, check the door
contact switch. Check whether
there is still a terminating resistor
in the RJ12 plug or connected to
the door contact clamp.
Failure door
contact
● Wire break or short circuit on the door
contact line.
● Short circuit or wire break at the door
contact e.g. wire not connected.
● Terminating plug is missing, if no door
contact is intended.
● Output and input of the door contact
are inverted.
Check the door contact connec-
tions. Where applicable connect
wire or insert terminating plug.
Wire the door contact properly
.
Failure power
supply unit
(PSU)
● Power supply unit no longer emits any
voltage if, for example, a mains lead
is not connected.
Restore the power supply.
Messages display
Operating Instructions / DET-AC III Master / 916005 / 11-2022 / en_US
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