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FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
Fault
Category
Issue 04 (2018-01-05)
Alarm
Symptom
Severity
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Alarms and Faults
Possible
Troubleshooti
Cause
ng
Power supply to
Check the
the indoor fan is
power supply to
abnormal.
the indoor fan.
Remove the
terminals of the
fan, and check
whether the
voltage between
the 0 V and 48
V terminals is
48 V using a
multimeter. If
the voltage
differs too
much, the
power supply is
abnormal.
If the power
supply is
normal, the
indoor fan is
faulty.
Replace the
indoor fan
by following
instructions
in the
"Replacing
an Indoor
Fan" section
in
NetCol5000-
A 20 kW
Air-Cooled
In-Row
Precision
Air
Conditioner
User
Manual, and
check
whether the
abnormality
disappears.
If the power
supply is
abnormal:
1. Check
whether
the QF4
switch
on the
power
subrack
is turned
on. If
yes, go
to the
65
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