Huawei NetCol8000-C070 User Manual page 137

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Alar
m ID
A002
Issue 02 (2020-08-30)
Alarm Alarm Possible Cause
Name Severi
ty
Supply Major 1. Check the cables to the
water temperature sensor.
temperat
2. Maintain or replace
ure
the temperature sensor.
failure
Return Major 1. Check the cables to the
water temperature sensor.
temperat
2. Maintain or replace
ure
the temperature sensor.
failure
Return Critica 1. The temperature
air high l sensors or temperature
temperat and humidity sensors are
ure located in inappropriate
alarm 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.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
1. Check the cables to
the temperature
sensor.
2. Maintain or replace
the temperature
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 air conditioners
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.
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