VESDA by Xtralis
VESDA VLI Product Guide
www.xtralis.com
51
8
Troubleshooting
If the VLI detector 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 event log.
Tools such as the LCD Programmer or the Xtralis VSC software 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.
Additionally, if a Remote Display unit is connected to the detector, the specific fault type will be
indicated on the Remote Display. The fault types shown on the display are listed below in Table 8-1.
Table 8-1: Fault Types indicated by the Remote Display
Fault Type
Description
Urgent
A serious fault requiring immediate attention.
System
A fault affecting the network.
Zone
A Zone fault in the display module.
Power
If the monitored GPI Function is used, and this LED is lit it indicates a
fault in the power supply,
Network
A communications fault on VESDAnet.
Airflow
Higher or lower than acceptable levels of air flow through the inlet
pipe.
Filter
An air filter requires changing.
Note:
It is normal for a new system to indicate airflow faults. These are rectified as part of the
setup and commissioning process.
8.1
Troubleshooting with Xtralis VSC
The Xtralis VSC software 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.
8.2
Troubleshooting with an LCD Programmer
The LCD Programmer reports individual device faults. The faults are reported in the status screen
and are clearly identified with a “F” icon against the fault. Details of the faults can be interrogated
through the “status” option of the respective device.
For further details please refer to the LCD Programmer Product Guide.
8.3
Fault Reporting Through Relays
VESDA devices are often interfaced with Fire Alarm Control Panels (FACPs) or building
management systems (BMS) and may not be connected to display modules. In such instances the
fault relays signal the fault to the FACP or the BMS which then reports the fault. It would be
necessary to use an LCD Programmer or Xtralis VSC software to further investigate the fault.
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