VESDA VLC-400 Product Guide
VESDA by Xtralis
6
www.xtralis.com
2.2.1
LED Functions
The functions of the LED indicators on the front panel from top to bottom are described in 2.2.1.
Table 2-1: LED Functions
LED
Function
FIRE
This
RED LED
illuminates when the Fire alarm threshold is
exceeded. The LED is normally controlled from the FACP but in
abnormal conditions, such as a communications failure, cannot be
controlled by the detector.
FLOW
This
YELLOW LED
illuminates when there is flow fault.
FAULT
This
YELLOW LED
illuminates when a fault condition occurs. This
includes a flow or filter fault.
The LED also illuminates during airflow normalization.
OK
This
GREEN LED
remains illuminated lit during normal operation
showing the unit is operating correctly.
The LED functions indicate:
l
Continuous = OK
l
2 flashes = Normalizing flow in progress
l
3 flashes = AutoLearn in progress
l
2 flashes then 3 flashes = Normalization and AutoLearn in
progress
FILTER
This
YELLOW LED
illuminates when a filter fault occurs.
