Huawei NetCol5000-A-035 - Page 190

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
6 System Operation and Maintenance
Issue 13 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
181
Alar
m
ID
Alarm
Alarm
Severit
y
Default
Value
Impact
Possible Cause
Solution
a177
Humidit
y
invalid
L1/L2
interrup
t
Major
N/A
The alarm
is
generated
.
1. All cabinet T/H sensors
are faulty.
2. All cables to the cabinet
T/H sensors are loose or
damaged.
3. All aisle T/H sensors of
smart cooling products
are faulty.
4. All cables to the aisle
T/H sensors of smart
cooling products are
loose or damaged.
5. All DIP switches of the
T/H sensors are set
incorrectly.
6. All communications
ports of the control
board are faulty.
7. The ETH converter is
faulty.
8. The smart socket is
faulty.
1. Maintain or replace the
cabinet T/H sensors.
2. Maintain or replace the
cables to the temp
sensors, rack
environment units, and
monitoring host
(ECC).
3. Maintain or replace the
T/H sensors of smart
cooling products.
4. Maintain or replace the
cables between the
T/H sensors and the
control board.
5. Set the DIP switches
correctly for T/H
sensor.
6. Maintain or replace the
control board.
7. Maintain or replace the
ETH converter.
8. Maintain or replace the
smart socket.
6.4 Troubleshooting

Certain circuits in the NetCol5000-A has 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 6-7 describes how to troubleshoot the NetCol5000-A.
Table 6-7 Troubleshooting
Symptom
Possible Cause
Solution