Huawei NetCol5000-A050 - Page 235

Alarm
ID
Alarm Name Alar
m
Seve
rity
Possible Cause Solution
A281-0
4
Backup power
voltage
abnormal
MAJ
OR
1. The power
supply voltage is
below the lower
threshold.
2. The cables to
the SPD and
voltage detection
board are loose or
damaged.
3. The SPD and
voltage detection
board is faulty.
1. Check that the power
supply voltage is within
the operating range.
2. Check the cable
connection to the SPD
and voltage detection
board.
3. Replace the SPD and
voltage detection
board.
A281-0
8
Backup power
voltage
abnormal
MAJ
OR
1. The power
supply voltage is
below the lower
threshold.
2. The cables to
the SPD and
voltage detection
board are loose or
damaged.
3. The SPD and
voltage detection
board is faulty.
1. Check that the power
supply voltage is within
the operating range.
2. Check the cable
connection to the SPD
and voltage detection
board.
3. Replace the SPD and
voltage detection
board.
A281-1
0
Backup power
voltage
abnormal
MAJ
OR
1. The power
supply voltage is
below the lower
threshold.
2. The cables to
the SPD and
voltage detection
board are loose or
damaged.
3. The SPD and
voltage detection
board is faulty.
1. Check that the power
supply voltage is within
the operating range.
2. Check the cable
connection to the SPD
and voltage detection
board.
3. Replace the SPD and
voltage detection
board.
A282-0
2
Power phase
sequence
abnormal
MAJ
OR
1. The phase
sequence of the
power supply is
incorrect.
2. The SPD and
voltage detection
board is faulty.
1. Rectify the phase
sequence of the power
supply.
2. Maintain or replace
the SPD and voltage
detection board.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 9 Alarm Reference
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 225