FusionModule1000B Air-Cooled IT Solution
Maintenance Guide
5 Alarms and Faults
Issue 02 (2017-01-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
63
Fault
Category
Alar
m
Sever
ity
Symptom
Possible
Cause
Troubleshooting
frozen.
5.9 Hydrogen Alarm
Fault
Category
Alar
m
Sever
ity
Symptom
Possible
Cause
Troubleshooting
High
Hydrogen
Density
Critica
l
The management
system displays a
hydrogen alarm
when cables are
correctly connected,
the hydrogen exhaust
fan is working
properly, and the
exhaust vent is not
blocked.
The hydrogen
collector is
faulty.
Replace the hydrogen
collector by following
instructions in
documents delivered
with the hydrogen
collector.
The hydrogen
exhaust fan does not
rotate or rotates
slowly.
Cables of the
hydrogen
exhaust fan are
not properly
connected.
Verify the cable
connections.
The hydrogen
exhaust fan is
faulty.
Replace by following
instructions in
Replacing a Hydrogen
Exhaust Fan
All hardware is
intact during onsite
preventive
maintenance
inspection, but the
management system
displays a hydrogen
high alarm.
The hydrogen
density is too
high.
For details, see
Emergency Operations
for High Hydrogen
Density
The exhaust
vent is blocked.
Clear the foreign matter
or replace by following
instructions in
Replacing a Ventilation
Vent Air Filter