Huawei NetCol8000-E220 User Manual page 133

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A055-
MAJOR
01
A055- MAJOR
01
A056- MAJOR
01
A056- MAJOR
01
A059- MAJOR
01
A059- MAJOR
01
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
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.
Compressor 1 1. The cables to the exhaust air
discharge temperature sensor are loose or
temperature damaged.
sensor fault
2. The exhaust air temperature
sensor is faulty.
Compressor 2 1. The cables to the exhaust air
discharge temperature sensor are loose or
temperature damaged.
sensor fault
2. The exhaust air temperature
sensor is faulty.
Compressor 1 1. The cables to the pressure sensor
discharge are loose or damaged.
pressure
2. The pressure sensor is faulty.
sensor fault
Compressor 2 1. The cables to the pressure sensor
discharge are loose or damaged.
pressure
2. The pressure sensor is faulty.
sensor fault
Compressor 1 1. The cables to the pressure sensor
suction are loose or damaged.
pressure
2. The pressure sensor is faulty.
sensor fault
Compressor 2 1. The cables to the pressure sensor
suction are loose or damaged.
pressure
2. The pressure sensor is faulty.
sensor fault
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
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. Check cables to the exhaust
air temperature sensor.
2. Maintain or replace the
exhaust air temperature sensor.
1. Check cables to the exhaust
air temperature sensor.
2. Maintain or replace the
exhaust air temperature sensor.
1. Check the cables to the
pressure sensor.
2. Replace the pressure sensor.
1. Check the cables to the
pressure sensor.
2. Replace the pressure sensor.
1. Check the cables to the
pressure sensor.
2. Maintain or replace the
pressure sensor.
1. Check the cables to the
pressure sensor.
2. Maintain or replace the
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