Huawei NetCol5000-A050 User Manual page 201

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Alarm
ID
A023-0
1
A025-0
1
A027-0
1
Issue 08 (2021-09-17)
Alarm Name Alar
m
Seve
rity
Electric heater MAJ
fault OR
Return air WAR
filter blocked NIN
alarm G
Power loss WAR
alarm NIN
G
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
1. The cables to
the temperature
switch are loose or
damaged.
2. The
temperature
switch is faulty.
3. The electric
heater is faulty.
1. Air filters are
blocked or dirty.
2. The differential
pressure switch is
faulty.
3. An
inappropriate
threshold is set for
the differential
pressure switch.
4. The pressure
tube of the
differential
pressure switch is
blocked or
disconnected.
5. The cables to
the differential
pressure switch
are loose or
damaged.
The power supply
is cut off.
9 Alarm Reference
Solution
1. Check the cables to
the temperature switch.
2. Maintain or replace
the temperature switch.
3. Replace the electric
heater.
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.
1. If power failure
occurs on the power
system, no
maintenance is needed.
If it occurs in other
places, check the power
supply cables.
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