Huawei NetCol5000-C030H90D0 User Manual page 152

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
Alar
m ID
A281
A30C
A30D
Issue 03 (2020-08-30)
Alarm Alarm
Name Severi
ty
Power MAJO
voltage R
abnormal
Power
voltage
abnormal
Certificate is WARNI
about to NG
expire
Certificate is WARNI
not in effect NG
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
1. The power supply
voltage exceeds the
upper threshold.
2. If a voltage
jumper is used, it
may be incorrectly
connected.
3. If a toggle switch
is used, it may be
incorrectly set.
1. The power supply
voltage is below the
lower threshold.
2. If a voltage
jumper is used, it
may be incorrectly
connected.
3. If a toggle switch
is used, it may be
incorrectly set.
1. The
corresponding
certificate is about
to expire.
2. The system time
is incorrectly set.
1. The installed
corresponding
certificate does not
take effect.
2. The connection of
the corresponding
certificate server is
abnormal.
3. The
corresponding
certificate is not
within the validity
period.
Solution
1. Measure the power
supply voltage.
2. Maintain or replace
the voltage jumper.
3. Set the toggle switch
correctly.
1. Check that the power
supply voltage is within
the operating range.
2. Maintain or replace
the voltage jumper.
3. Set the toggle switch
correctly.
1. Apply for a new
certificate promptly and
update the existing one.
2. Calibrate the system
time.
1. Ensure that the
certificate is correctly
installed.
2. Ensure that the
connection of the
certificate server is
normal.
3. Ensure that the
installed certificate is
within the validity
period.
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