VESDA by Xtralis VESDA VLI Product Guide
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8 Troubleshooting
If the VLIdetector identifies a fault condition, the Fault LED on the front of the detector illuminates and an
event containing details of the condition is written to the active event list.
Tools such as the LCD Programmer or the Xtralis VSCsoftware must be used to obtain specific information
on the event to enable further investigation and correction of the fault. The Xtralis VSC Online Help contains
descriptions of each fault and recommended corrective actions.
8.1 Fault Reporting through Relays
VESDA devices are often interfaced with Fire Alarm Control Panels (FACPs) or building management
systems (BMS) via relays. In such instances the fault relays signal a fault condition to the FACP or the BMS.
It would be necessary to use an LCD Programmer or Xtralis VSC software to further investigate the fault.
8.2 Troubleshooting with Xtralis VSC
The Xtralis VSCsoftware displays faults in the active event list as they occur. The list displays the date and
time of the fault, the serial number of the device on which the fault has occurred, the zone number, fault
number, and a description of the fault.
For detailed information about a fault, access the device tree menu, highlight the device, and select device
information. This will display the details of the fault.
The fault is removed from the active event list once the it is cleared.