Huawei NetCol5000-C Series User Manual page 132

NetCol5000-C(065, 080) In-row Chilled Water Smart
Cooling Product
User Manual
Alarm
ID
A002-01
A003-01
Issue 07 (2020-03-16)
Alarm Alarm
Name Severit
y
Return Major
water
temperatur
e sensor
fault
Return air Critical
high
temperatur
e alarm
Return air Warnin
low
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Impact Possible Cause
1. The cables to the
An
temperature
alarm is
sensor are loose
triggere
or damaged.
d.
2. The temperature
sensor is faulty.
1. The temperature
An
sensors or
alarm is
temperature and
triggere
humidity sensors
d.
are located in
inappropriate
positions.
2. The thermal load
power is high or
the cooling
capacity is
insufficient.
3. The ambient
temperature
exceeds the
upper threshold.
4. The high
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 chilled water
flow is
insufficient, or
the supply water
temperature is
high.
7. The chilled water
valve is stuck or
faulty.
1. The temperature
An
sensors or
alarm is
Solution
sensor.
1. Check the cables
to the
temperature
sensor.
2. Maintain or
replace the
temperature
sensor.
1. Adjust the
positions of the
temperature
sensors or
temperature and
humidity
sensors.
2. Add smart
cooling products
or 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 high
temperature
alarm threshold.
5. Calibrate or
replace the
temperature
sensor or
temperature and
humidity sensor.
6. Check the
pressure and
temperature of
chilled water.
7. Maintain or
replace the
chilled water
valve.
1. Adjust the
positions of the
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