Huawei NetCol8000-A045D User Manual page 249

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Alarm ID Alarm Name
A222-01 Main control module
power supply
abnormal
A233-01 Air-side low pressure
difference alarm
A242-01 Manual shutdown
alarm
A26B-01 Indoor fan 1 power
supply abnormal
A26B-04
Indoor fan 2 power
supply abnormal
A26B-02 Indoor fan 1 power
supply abnormal
Indoor fan 2 power
supply abnormal
Issue 05 (2020-10-10)
Alarm
Severity
Major
Warning
Major
Major
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● The system is
powered off.
● The main control
module is in poor
contact.
● The auxiliary power
supply is faulty.
● The auxiliary power
supply is in poor
contact.
● The main control
module is faulty.
● Contained aisles
are poorly-sealed.
● The differential
pressure sensor is
faulty.
The air conditioner is
shut down via the LCD
or NetEco.
● The cable to the
fan is not
connected properly.
● The fan drive is
faulty.
The fan drive is faulty.
10 Alarm Reference
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.
Restart the air
conditioner via the
LCD or NetEco.
1. Check the cable
connection to the
fan.
2. If the drive is
integrated into the
fan, replace the
fan.
If the drive is
separate from the
fan, replace the
drive.
If the drive is
integrated into the
fan, replace the fan.
If the drive is separate
from the fan, replace
the drive.
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