Huawei NetCol8000-E220 User Manual page 138

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A091- WARNIN
01 G
A092- WARNIN
01 G
A093- WARNIN
01 G
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
limit alarm
Cold aisle 1. The temperature sensors or
low temperature and humidity sensors
temperature are located in inappropriate
alarm 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.
Hot aisle low 1. The temperature sensors or
temperature temperature and humidity sensors
alarm 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.
High 1. The thermal load power is low.
humidity
2. The ambient humidity exceeds
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
point, and refill refrigerant after
maintenance.
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
filters.
7. Maintain or replace the
chilled water valve.
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
filters.
7. Maintain or replace the
chilled water valve.
1. Contact Huawei technical
support.
130