Huawei NetCol8000-E220 User Manual page 176

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A222
-01
A233
-01
A242
-01
A26B
-01
A26B
-01
A26B
-01
A26B
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
MAJOR Main control
module
power supply
abnormal
WARNI Air-side low
NG pressure
difference
alarm
MAJOR Manual
shutdown
alarm
MAJOR Indoor fan 1
power supply
abnormal
MAJOR Indoor fan 2
power supply
abnormal
MAJOR Indoor fan 3
power supply
abnormal
MAJOR Indoor fan 4
power supply
abnormal
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The system is
powered off.
2. The main control
module is in poor
contact.
3. The auxiliary
power supply is
faulty.
4. The auxiliary
power supply is in
poor contact.
5. The main control
module is faulty.
1. Contained aisles
are poorly-sealed.
2. The differential
pressure sensor is
faulty.
The air conditioner
is shut down via the
LCD or NetEco.
1. The cable to the
fan is not connected
properly.
2. The fan is faulty.
1. The cable to the
fan is not connected
properly.
2. The fan is faulty.
1. The cable to the
fan is not connected
properly.
2. The fan is faulty.
1. The cable to the
fan is not connected
properly.
2. The fan is faulty.
Solution
1. Power on the
system.
2. Check the
interconnection
module in the main
control module.
3. Replace the auxiliary
power supply.
4. Check the
interconnection
module of the auxiliary
power supply.
5. Replace the main
control module.
1. Check that the cold
and hot aisles are well-
sealed.
2. Maintain or replace
the differential
pressure sensor.
1. Restart the air
conditioner via the LCD
or NetEco.
1. Check the cable
connection to the fan.
2. Maintain or replace
the fan.
1. Check the cable
connection to the fan.
2. Maintain or replace
the fan.
1. Check the cable
connection to the fan.
2. Maintain or replace
the fan.
1. Check the cable
connection to the fan.
2. Maintain or replace
the fan.
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