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C420 Programming Manual
2 LED INDICATORS
– KEYS – RELAYS
2.1 LED INDICATORS
The control panel is equipped with the following LED indicators, used to signal alarm conditions, faults, exclusions, etc.
Each LED is represented by an icon on the front cover of the control panel. Just for convenience, a name is associated to each
LED. This name will be used to refer to the LED throughout the document.
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.
CPU
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.
Summary of Contents for C420
Page 23: ...C420 Programming Manual 23 ...
