Huawei FusionModule1000A40 Maintenance Manual page 52

FusionModule1000A40 Prefabricated All-in-One
Data Center
Maintenance Guide
Alarm Alarm
Indicator Type
Name
2nd Stage Isolatio
Contact n alarm
Extract Fan Isolatio
n alarm
Extinguisha Startup
nt Released alarm
Release Startup
Imminent alarm
1st Stage Startup
Activated alarm
Hold Startup
Activated alarm
Flooding Fault
Zone alarm
Low Action
Pressure alarm
Issue 04 (2021-02-10)
Alarm System Action
Severity
Major The S2 port has 24
V DC voltage
output.
Major The Extract Fan
port has 24 V DC
voltage output.
Major Extinguishant
release countdown
starts.
Major Extinguishant
release starts.
Major The alarm signal of
the first stage is
output.
Major Countdown stops.
Major NO and C on the
FAULT RELAY port
become closed,
while NC and C
become open.
Major N/A
Copyright © Huawei Technologies Co., Ltd.
4 Common Faults and Troubleshooting Measures
Possible
Causes
2nd Stage
Contact is in
isolation mode.
Extract Fan is
in isolation
mode.
Extinguishant
Released has
started.
Release
Imminent has
started.
1st Stage
Activated has
started.
The stop
button has
been pressed.
1. The external
connected
repeater or
linkage
output
board does
not have
signals.
2. The S3,
Comms,
Exting,
Hold,
Manual
release,
Mode,
Release, or
Low press
fault may
exist.
Low Pressure
has started.
Solution
To clear the alarm,
press the W/DOG
RESET or PROC
RESET button.
After the component
is reset, press the
RESET button.
Check relevant cable
connections and the
external connected
repeater or linkage
output board.
Check the pressure
of the cylinder. If the
pressure is too low,
increase the pressure
or add extinguishant
in time.
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