Troubleshooting - Huawei NetCol8000-C070 User Manual

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Alar
m ID
A286
A30C
A30D
A30E

6.6 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.
Issue 02 (2020-08-30)
Alarm Alarm
Name Severi
ty
Auxiliary Major
power
fault
Certificat Warni
e is ng
about to
expire
Certificat Warni
e is not ng
in effect
Certificat Warni
e has ng
expired
CA UTION
NO TICE
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
The auxiliary power
supply is faulty.
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.
1. The corresponding
certificate has expired.
2. The system time is
incorrectly set.
Solution
Maintain or replace
the auxiliary power
supply 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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