Alarm ID
Alarm Name
Alarm
Severity
Possible Cause
Solution
A025-01
Return air filter
blocked alarm
Warning
● Air filters are
blocked or dirty.
● The differential
pressure switch is
faulty.
● An inappropriate
threshold is set for
the differential
pressure switch.
● The pressure tube
of the differential
pressure switch is
blocked or
disconnected.
● The cables to the
differential pressure
switch are loose or
damaged.
1. Maintain or replace
the air filters.
2. Replace the
differential pressure
switch.
3. Adjust the
threshold set for
the differential
pressure switch.
4. Dredge or replace
the pressure tube.
5. Check the cables to
the differential
pressure switch.
A027-01
Power loss alarm
Warning
The power supply is
cut off.
If power failure occurs
on the power system,
no maintenance is
needed. If it occurs in
other places, check the
power supply cables.
A038-01
Compressor 1 liquid
pipe temp sensor fault
Compressor 2 liquid
pipe temp sensor fault
Major
● The cables to the
liquid pipe
temperature sensor
are loose or
damaged.
● The liquid pipe
temperature sensor
is faulty.
1. Check the cables to
the liquid pipe
temperature sensor.
2. Maintain or replace
the liquid pipe
temperature sensor.
A042-01
Remote shutdown
alarm
Critical
● The remote
shutdown dry
contact is triggered.
● The cables to the
remote shutdown
dry contact are
loose or damaged.
1. Check the status of
the remote
shutdown dry
contact.
2. Check the cables to
the remote
shutdown dry
contact.
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
10 Alarm Reference
Issue 05 (2020-10-10)
Copyright © Huawei Technologies Co., Ltd.
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