Huawei NetCol8000-E220 User Manual page 132

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A049- WARNIN
01 G
A050- CRITICA
01 L
A051- CRITICA
01 L
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
Supply air 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.
Cold aisle 1. The temperature sensors or
high temperature and humidity sensors
temperature are 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.
Hot aisle high 1. The temperature sensors or
temperature temperature and humidity sensors
alarm are located in inappropriate
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
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. 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.
1. Adjust the positions of the
temperature sensors or
temperature and humidity
124