Huawei NetCol5000-C030 User Manual page 144
In-row chilled water smart cooling product
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NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual
Alarm ID
Alarm Name
A025-01
Return air filter
blocked alarm
A026-01
Return air filter exceed
runtime alarm
A027-01
Power loss alarm
A040-01
PSU 1 power supply
abnormal
PSU 2 power supply
abnormal
A042-01
Remote shutdown
alarm
Issue 04 (2021-03-15)
Alarm
Severity
Warning
Warning
Warning
Warning
Critical
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
● 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.
The accumulated
runtime of the air
filter exceeds the
alarm threshold.
The power supply is
cut off.
The input power
cables of the PSU are
loose or damaged.
● The remote
shutdown dry
contact is triggered.
● The cables to the
remote shutdown
dry contact are
loose or damaged.
Solution
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.
Maintain or replace
the air filter and clear
the accumulated
runtime.
If power failure occurs
on the power system,
no maintenance is
needed. If it occurs in
other places, check the
power supply cables.
Check the input power
cables of the PSU.
1. Check the status of
the remote
shutdown dry
contact.
2. Check the cables to
the remote
shutdown dry
contact.
136
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