Gas Detection System GDS-24-2/4 User and Installation Manual
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7.3
Fault Condition
If system detects any fault, it immediately enters into fault condition. The system indicates fault visually and
audibly with distinctive indication than Gas alarm. NAC is not active, the fixed fault output relay (PFC relay) is
activated. The system is able to recognise faults in Zone circuit, NAC circuit, Mains fail, Battery Low/cut, etc. The
system faults are shown on LCD as shown below.
For example,
Fault
Zone1: Open
Fault
NAC: Open
NAC Open
FAULT [1/1]
The System operation for the fault condition is given below.
•
LCD shows fault message
•
Respective zone fault LED turns ON.
•
Fixed Fault output of the relay (PFC Relay) gets activated.
•
NACs are not active.
•
Internal buzzer toggles 1 second ON and
5 seconds OFF 5 times and then OFF.
Zone 1 Open
FAULT [1/1]
