C420 Installation Manual
21
4.2 LED INDICATORS
The control panel is equipped with 12 LEDs which notify alarms, faults and exclusions. For further information, please refer to the
programming manual.
Icon
Name
Colour
Function
AC / BATTERY
GREEN
Steady ON: the control panel is power supplied through
the AC mains.
Blinking: the control panel is power supplied through
the batteries.
Steady OFF: the command and control module is faulty.
ALARM
RED
Steady ON: the control panel is in alarm condition with
siren output ON.
GENERAL
EXCLUSION
YELLOW
Steady ON: at least one exclusion is present.
This indicator provides a cumulative notification of
exclusions.
GENERAL FAULT
YELLOW
Steady ON: at least one fault is present.
This indicator provides a cumulative notification of
faults. Further details on the fault type are provided
through the display or dedicated LEDs.
SYSTEM FAULT
YELLOW
Steady ON: a system fault is present.
Usually, when this LED is turned ON the CPU stops
working properly because of an hardware problem (e.g.,
some peripheral stops working as expected) or a
serious malfunctioning of the program.
BATTERY FAULT
YELLOW
Steady ON: a fault or a malfunctioning of the batteries
of the control panel occurs.
BATTERY CHARGER
FAULT
YELLOW
Steady ON: a fault to the battery charger has occurred.
FUSE FAULT
YELLOW
Steady ON: a fault to a fuse has occurred.
SIREN FAULT
YELLOW
Steady ON: the line connected to a siren output is in
fault (because of missing end of line resistor, short
circuit or fuse fault).
GROUND
DISPERSION
YELLOW
Steady ON: an electric ground dispersion is present.
SIREN EXCLUDED
YELLOW
Steady ON: at least one siren output is excluded.
TEST
YELLOW
Steady ON: a zone test is active.