FusionModule800 Smart Small Data Center
Maintenance Guide
3 Alarm References
Issue 02 (2016-11-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
Component
Alarm Name
Alarm
Severity
Possible
Cause
Measures
ATS Low
Voltage (alarm
2 on the
display)
Major
The mains
voltage is
low.
ATS
parameters
are not set
properly.
1.
Switch to
the backup
power
supply.
2.
Ensure that
ATS
parameters
are set
properly.
ATS
Overvoltage
(alarm 3 on the
display)
Major
The mains
voltage is
high.
ATS
parameters
are not set
properly.
1.
Switch to
the backup
power
supply.
2.
Ensure that
ATS
parameters
are set
properly.
ATS Open
Phase (alarm 4
on the display)
Major
The input
power cable is
loose or not
connected.
Check that the
input power
cable is
properly
connected.
ATS
Three-Phase
Voltage
Imbalance
(alarm 5 on the
display)
Major
The mains is of
poor quality.
Rectify the
mains.
ATS Incorrect
Phase Sequence
(alarm 6 on the
display)
Major
The phase
sequence of the
input power
cable is
incorrect.
Check that the
input power
cable is
properly
connected.
Abnormal ATS
Frequency
(alarm 7 on the
display)
Major
The mains is of
poor quality.
Rectify the
mains.