Huawei NetCol8000-E220 User Manual page 206

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A28E
-20
A28F
-01
A28F
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
CRITICA Compressor 2
L drive alarm
MAJOR Compressor 1
drive power
supply
abnormal
MAJOR Compressor 2
drive power
supply
abnormal
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The fans in the
compressor drive
are faulty.
2. The air vents of
the fans in the
compressor drive
are dirty or blocked.
3. The compressor
drive heat sink is
dirty, so the heat
exchange effect is
poor.
4. The electric
control box cavity is
dirty or blocked,
and the module
heat exchange
effect is poor.
5. The drive module
is faulty.
1. The power supply
voltage is low.
2. The compressor
drive is faulty.
3. The primary
power supply is
faulty or the cables
to the compressor
drive are loose or
damaged.
1. The power supply
voltage is low.
2. The compressor
drive is faulty.
3. The primary
power supply is
faulty or the cables
to the compressor
drive are loose or
damaged.
Solution
1. Check the fans in
the compressor drive.
2. Clean the air vents
of the fans in the
compressor drive.
3. Clean the heat sink
after power-off.
4. Clean the cavity
after power-off.
5. Replace the drive
module.
1. Check the power
supply voltage.
2. Maintain or replace
the compressor drive.
3. Check the primary
power supply and the
cable connection to the
compressor drive.
1. Check the power
supply voltage.
2. Maintain or replace
the compressor drive.
3. Check the primary
power supply and the
cable connection to the
compressor drive.
197