Message
Cause
Necessary measure
Perform main-
tenance
● Operating time has reached the main-
tenance interval.
Inform service. Call for mainte-
nance.
Battery change
required
● Operating time has reached maximum
durability.
Inform service. Call for mainte-
nance.
System failure ● Serious internal problem.
Reboot the system.
Inform service.
Date / time
● Actuation of the buttons "Up" /
"Down".
None.
Event memory ● Actuation of the buttons "Up" /
"Down".
None.
Air flow cali-
bration
● Actuation of the buttons "Up" /
"Down".
None.
Lamp test
● Actuation of the buttons "Up" /
"Down".
None.
Version infor-
mation
● Actuation of the buttons "Up" /
"Down".
None.
Firmware ver-
sion
● Actuation of the buttons "Up" /
"Down".
None.
Control panel
version
● Actuation of the buttons "Up" /
"Down".
None.
BIOS version
● Actuation of the buttons "Up" /
"Down".
None.
Checksums
● Actuation of the buttons "Up" /
"Down".
None.
Air flow indica-
tion
● Actuation of the buttons "Up" /
"Down".
None.
Automatic air
flow calibration
● Actuation of the buttons "Up" /
"Down".
None.
Manual air flow
calibration
● Actuation of the buttons "Up" /
"Down".
None.
Pre-alarm
● Fire detector 1 has detected.
Acknowledge.
Triggering
extinguish.
system
● Fire detected.
● Manual release.
Inform service.
Tank not
empty
● Is reported after an simulated
extinguishing has occurred (in
blocked state) if the tank was not
emptied in the prescribed time.
Acknowledge.
Tank empty
● Is reported after extinguishing has
occurred as the tank is then empty.
Inform service. Call for mainte-
nance.
Mains failure
● Mains power supply unavailable.
Rectify any possible failures in the
mains power supply.
Messages display
Operating Instructions / DET-AC III Master / 916005 / 11-2022 / en_US
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