Huawei NetCol5000-C Series User Manual page 133

NetCol5000-C(065, 080) In-row Chilled Water Smart
Cooling Product
User Manual
Alarm
ID
A007-01
Issue 07 (2020-03-16)
Alarm Alarm
Name Severit
y
g
temperatur
e alarm
Return air Major
2
temp/humi
d sensor
comm
failed
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Impact Possible Cause
triggere temperature and
d. 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 different from
the actual value.
6. The air filters are
blocked.
7. The chilled water
valve is stuck or
faulty.
1. The cables to the
An
temperature and
alarm is
humidity sensor
triggere
are loose or
d.
damaged.
2. The DIP switch
of the
temperature and
humidity sensor
is set incorrectly.
3. The temperature
and humidity
sensor is faulty.
4. The
communications
port of the main
Solution
temperature
sensors or
temperature and
humidity
sensors.
Step2.Contact
Huawei technical
support.
2. Measure the
ambient
temperature.
Check whether
other causes
exist if the alarm
persists in a long
time after
startup.
3. Adjust the low
temperature
alarm threshold.
4. Calibrate or
replace the
temperature
sensor or
temperature and
humidity sensor.
5. Maintain or
replace the air
filters.
6. Maintain or
replace the
chilled water
valve.
1. Check the cables
to the
temperature and
humidity sensor.
2. Set the DIP
switch of the
temperature and
humidity sensor
correctly.
3. Maintain or
replace the
temperature and
humidity sensor.
4. Maintain or
replace the main
control board.
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