Troubleshooting The Extinguishant Control Panel - Huawei FusionModule1000A40 Maintenance Manual

FusionModule1000A40 Prefabricated All-in-One
Data Center
Maintenance Guide

4.1 Troubleshooting the Extinguishant Control Panel

Table 4-1 Troubleshooting the extinguishant control panel
Alarm Alarm
Indicator Type
Name
Fire FIRE
RELAY
Power On Warnin
g
Delay On Warnin
g
Issue 04 (2021-02-10)
Alarm System Action
Severity
Major 1. S1 is triggered
to output 24 V
DC voltage
when only the
smoke detector
or heat detector
raises an alarm.
NO and C on
the 1st port
become closed,
while NC and C
become open.
NO and C on
the FIRE RELAY
port become
closed, while NC
and C become
open.
2. S3 is triggered
to output 24 V
DC voltage
when both
smoke and heat
detectors raise
alarms.
Meanwhile, NO
and C on the
2nd Stage port
become closed,
while NC and C
become open.
Minor N/A
Minor N/A
Copyright © Huawei Technologies Co., Ltd.
4 Common Faults and Troubleshooting Measures
Possible
Causes
The smoke or
heat detector
raises an
alarm.
The power
supply is
normal.
The
extinguishant
control panel is
in delay mode.
Solution
Locate and clear the
alarm raised by the
smoke or heat
detector. The
indicator is steady on
when there is an
alarm, and starts
blinking (once every
6 seconds) after the
alarm is cleared.
N/A
Handle relevant
devices to restore the
panel to normal.
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