Alarm ID
Alarm Name
Alarm
Severity
Possible Cause
Solution
A174-01
SPD function failure
Backup SPD function
failed
Auxiliary cooling SPD
and voltage detection
board function failure
Major
The SPD and voltage
detection board is
faulty.
Replace the SPD and
voltage detection
board.
A174-02
SPD function failure
Major
● The SPD is faulty.
● The cable to the
SPD is not
connected properly.
1. Replace the SPD.
2. Check the cable
connection to the
SPD.
A184-01
Compressor 1
preheating alarm
Compressor 2
preheating alarm
Compressor 3
preheating alarm
Warning
● The compressor is
preheated before
startup.
● The compressor is
preheated after a
power failure.
1. Start the
equipment after
preheating is
complete, or set
the Compressor
preheating
parameter to Off
to stop preheating.
2. Wait until
compressor
preheating is
complete, or set
the Compressor
preheating
parameter to Off
to stop preheating.
A193-01
Air-side diff pressure
sensor fault
Major
● The cable to the
differential pressure
sensor is loose or
damaged.
● The pressure tube
of the differential
pressure sensor is
reversely
connected.
● The differential
pressure sensor is
faulty.
1. Check the cable
connection to the
differential pressure
sensor.
2. Check the tube
connection to the
differential pressure
sensor.
3. Maintain or replace
the differential
pressure sensor.
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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