Conventional Fire Panel System Overview | en 7
Bosch Sicherheitssysteme GmbH Operation Guide F.01U.172.982 | 5.0 | 2012.04
3.3 The LCD Display
LED Meaning
Fire At least one zone has triggered a fire alarm. The LEDs
of the triggering zones are illuminated red.
Pre-Alarm At least one zone has triggered a pre-alarm. The LED
flashes every 2 seconds. The LEDs of the zones that
have triggered the pre-alarm flash red.
Fault At least one component in the system has a fault.
System fault The system is or was not working correctly. Perform a
reset to check whether the fault persists.
Ground fault The fire detection system continuously checks for an
earth connection (a panel wire is connected to the
ground). There is a ground fault.
Power supply fault There is a fault in the power supply (battery or power
supply unit).
NAC fault/disabled There is a fault on the notification appliance lines or
at least one notification appliance line is switched off.
Notification
Appliance Silent
The notification appliances have been silenced.
Day mode The system is in daytime mode. Zones that are
programmed as alarm verification trigger an alarm.
You are prompted by the panel to verify the alarm.
Disablements At least one system component is disabled. (Zone,
notification appliance, relay)
Test At least one zone is in test mode. The relevant zone
LEDs flash at 2 Hz.
Power Lit continuously in green when the system is supplied
with power.
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