Huawei NetCol8000-C User Manual page 188

NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alar Alarm
m ID Name
a092 Hot aisle
low
temperature
alarm
a093 High
humidity
a094 Low
humidity
Issue 06 (2020-01-13)
Alarm Impact
Severi
ty
Warnin An alarm is
g triggered.
Warnin An alarm is
g triggered.
Warnin An alarm is
g triggered.
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
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 different from the
actual value.
6. The air filters are blocked.
7. The chilled water valve is
stuck or faulty.
1. The load is low.
2. The ambient humidity
exceeds the upper
threshold.
3. The temperature and
humidity sensor is not
installed in a proper
position.
4. The high humidity alarm
threshold is inappropriate.
5. The value detected by the
temperature and humidity
sensor is different from the
actual value.
1. The ambient humidity is
low.
2. The T/H sensors are located
in inappropriate position.
3. The low humidity alarm
6 System Operation and Maintenance
Solution
6. Maintain or replace
the air filters.
7. Maintain or replace
the chilled water
valve.
1. Adjust the positions of
the temperature
sensors or temperature
and humidity sensors.
2. Measure the ambient
temperature. Check
whether other causes
exist if the alarm
persists in a long time
after startup.
3. Measure the ambient
temperature.
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 filters.
7. Maintain or replace
the chilled water
valve.
1. Contact Huawei
technical support.
2. Measure the ambient
humidity.
3. Adjust the position of
the temperature and
humidity sensor.
4. Adjust the high
humidity alarm
threshold.
5. Calibrate or replace
the temperature and
humidity sensors.
1. Check the ambient
humidity.
2. Adjust the position of
the T/H sensors.
3. Adjust the low
180