Troubleshooting - Huawei NetCol8000-C070 User Manual

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Alarm ID Alarm Name
A286-01 Auxiliary power fault
A286-02
A30C-01 Certificate is about to
expire
A30C-02
A30C-04
A30D-01 Certificate is not in
effect
A30E-01 Certificate has expired
A30E-02
A30E-04

6.3 Troubleshooting

Certain circuits in the NetCol8000-C have lethal voltage. Only professional
technicians are allowed to perform maintenance. Exercise caution during live-line
troubleshooting.
If jumpers are used for troubleshooting, remove them after troubleshooting.
Connected jumpers may affect control functions and damage equipment.
Table 6-4
Issue 07 (2021-12-30)
Alarm
Severity
Major
Warning
Warning
Warning
CA UTION
NO TICE
describes how to troubleshoot the NetCol8000-C.
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
The auxiliary power
module is faulty.
● The corresponding
certificate is about
to expire.
● The system time is
incorrectly set.
● The installed
certificate does not
take effect.
● The connection of
the corresponding
certificate server is
abnormal.
● The corresponding
certificate is not
within the validity
period.
● The corresponding
certificate has
expired.
● The system time is
incorrectly set.
6 Maintenance
Solution
Maintain or replace
the auxiliary power
module.
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.
1. Apply for a new
certificate promptly
and update the
existing one.
2. Calibrate the
system time.
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