Huawei NetCol8000-E220 User Manual page 186

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A280
-01
A280
-01
A280
-02
A280
-02
A281
-04
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
MAJOR Power
frequency
abnormal
MAJOR Backup power
frequency
abnormal
MAJOR Power
frequency
abnormal
MAJOR Backup power
frequency
abnormal
MAJOR Power voltage
abnormal
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The power supply
frequency is below
the lower threshold.
2. The SPD and
voltage detection
board is faulty.
1. The power supply
frequency is below
the lower threshold.
2. The SPD and
voltage detection
board is faulty.
1. The power supply
frequency exceeds
the upper threshold.
2. The SPD and
voltage detection
board is faulty.
1. The power supply
frequency exceeds
the upper threshold.
2. The SPD and
voltage detection
board is faulty.
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.
Solution
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
1. Check the power
supply frequency, and
ensure that it is within
the working range.
2. Replace the SPD and
voltage detection
board.
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.
177