Alar
m ID
Alarm
Severit
y
Alarm Name
Probable Cause
Solution
A280
-01
MAJOR
Power
frequency
abnormal
1. The power supply
frequency is below
the lower threshold.
2. The SPD and
voltage detection
board is faulty.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
A280
-01
MAJOR
Backup power
frequency
abnormal
1. The power supply
frequency is below
the lower threshold.
2. The SPD and
voltage detection
board is faulty.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
A280
-02
MAJOR
Power
frequency
abnormal
1. The power supply
frequency exceeds
the upper threshold.
2. The SPD and
voltage detection
board is faulty.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
A280
-02
MAJOR
Backup power
frequency
abnormal
1. The power supply
frequency exceeds
the upper threshold.
2. The SPD and
voltage detection
board is faulty.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
A281
-04
MAJOR
Power voltage
abnormal
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.
NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
6 System Operation and Maintenance
Issue 06 (2020-08-19)
Copyright © Huawei Technologies Co., Ltd.
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