Alarm ID
Alarm Name
Alarm
Severity
Possible Cause
Solution
A233-01
Air-side low pressure
difference alarm
Warning
● Contained aisles
are poorly-sealed.
● The differential
pressure sensor is
faulty.
1. Check that the cold
and hot aisles are
well-sealed.
2. Maintain or replace
the differential
pressure sensor.
A242-01
Manual shutdown
alarm
Major
The air conditioner is
shut down via the LCD
or NetEco.
Restart the air
conditioner via the
LCD or NetEco.
A26B-01
A26B-04
Indoor fan 1 power
supply abnormal
Indoor fan 2 power
supply abnormal
Indoor fan 3 power
supply abnormal
Indoor fan 4 power
supply abnormal
Indoor fan 5 power
supply abnormal
Exhaust fan 1 power
supply abnormal
Exhaust fan 2 power
supply abnormal
Exhaust fan 3 power
supply abnormal
Exhaust fan 4 power
supply abnormal
Major
● The cable to the
fan is not
connected properly.
● The fan drive is
faulty.
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.
FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
8 System Maintenance
Issue 02 (2021-04-15)
Copyright © Huawei Technologies Co., Ltd.
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