Huawei NetCol5000-A025 - Page 194

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a0
0
3
Return
air low
temper
ature
alarm
WA
RNI
NG
Generates
an alarm.
1. The temperature
sensors or
temperature and
humidity sensors
are located in
inappropriate
positions.
2. The thermal
load power is
low.
3. The ambient
temperature is
below the lower
threshold.
4. The low
temperature
alarm threshold
is inappropriate.
5. The value
detected by the
temperature
sensor or
temperature and
humidity sensor
is
dierent from
the actual value.
6. The air
lters
are blocked.
1. Adjust the
positions of the
temperature
sensors or
temperature and
humidity sensors.
2. Contact Huawei
technical support.
3. Measure the
ambient
temperature. Check
whether other
causes exist if the
alarm persists in a
long time after
startup.
4. Adjust the low
temperature alarm
threshold.
5. Calibrate or replace
the temperature
sensor or
temperature and
humidity sensor.
6. Maintain or replace
the air
lters.
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. 184