Huawei FusionModule1000A40 Maintenance Manual page 53

FusionModule1000A40 Prefabricated All-in-One
Data Center
Maintenance Guide
Alarm Alarm
Indicator Type
Name
Auto& Action
Manual alarm
Manual Action
Only alarm
Mains fail Fault
alarm
Batt fail Fault
alarm
CPU fault Fault
alarm
Aux 24V Fault
fault alarm
Batt low Fault
alarm
Issue 04 (2021-02-10)
Alarm System Action
Severity
Major The system is in
automatic state,
and will release
extinguishant
automatically when
the second stage
alarm conditions
are met.
Major The system is in
manual state and
will not
automatically
release
extinguishant.
Major NO and C on the
FAULT RELAY port
become closed,
while NC and C
become open.
Major
Major
Major
Major
Copyright © Huawei Technologies Co., Ltd.
4 Common Faults and Troubleshooting Measures
Possible
Causes
Auto & Manual
has started.
Manual Only
has started.
The 220 V AC
mains is faulty.
The backup
batteries are
faulty.
The CPU is
faulty.
Aux 24V is
faulty.
The battery
voltage may be
lower than
20.5 V.
Solution
N/A
N/A
Check relevant cable
connections, and
check whether the
mains is normal.
Check relevant cable
connections and
batteries.
Replace the
mainboard.
Check relevant cable
connections and
devices.
Connect the
extinguishant control
panel to the mains
to charge the
batteries. If the
batteries cannot
recover, replace
them.
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