Huawei NetCol5000-A025 - Page 197

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a0
2
5
Return
air
lter
blocked
alarm
WA
RNI
NG
Generates
an alarm
and shuts
down the
electric
heater and
humidier.
1. Air lters are
blocked or dirty.
2. The dierential
pressure switch
is faulty.
3. An inappropriate
threshold is set
for the
dierential
pressure switch.
4. The pressure
tube of the
dierential
pressure switch
is blocked or
disconnected.
5. The cables to
the
dierential
pressure switch
are loose or
damaged.
1. Maintain or replace
the air lters.
2. Replace the
dierential
pressure switch.
3. Adjust the
threshold set for
the
dierential
pressure switch.
4. Dredge or replace
the pressure tube.
5. Check the cables to
the
dierential
pressure switch.
a0
2
7
Power
loss
alarm
WA
RNI
NG
Generates
an alarm.
The power supply is
cut o.
If power failure occurs
on the power system,
no maintenance is
needed. If it occurs in
other places, check
the power supply
cables.
a0
3
8
Compre
ssor
Liquid
pipe
temp
sensor
fault
MA
JOR
Generates
an alarm.
1. The cables to
the liquid pipe
temperature
sensor are loose
or damaged.
2. 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.
a0
4
0
PSU 1
power
supply
abnorm
al
MA
JOR
Generates
an alarm.
The input power
cables of the PSU
are loose or
damaged.
Check the input
power cables of the
PSU.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 6 System Operation and Maintenance
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 187