Huawei NetCol8000-E220 User Manual page 159

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A28D- CRITICA
02 L
A28E- CRITICA
01 L
A28E- CRITICA
01 L
A28E- CRITICA
02 L
A28E- CRITICA
02 L
A28E- CRITICA
04 L
A28E- CRITICA
04 L
A28E- CRITICA
20 L
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
Comp 2 low 1. The refrigerant leaks.
suction
2. The pressure displayed is
pressure
different from the actual pressure.
alarm
3. The filter dryer is blocked.
4. The expansion valve is blocked
or stuck, or the expansion valve coil
and cable connections are faulty.
5. The indoor fan is faulty.
6. The ambient temperature is
below the lower threshold.
Compressor 1
1. The compressor drive is faulty.
drive alarm
2. The compressor is faulty.
Compressor 2 1. The compressor drive is faulty.
drive alarm
2. The compressor is faulty.
Compressor 1 1. The compressor drive is faulty.
drive alarm
2. The compressor is faulty.
Compressor 2
1. The compressor drive is faulty.
drive alarm
2. The compressor is faulty.
Compressor 1 The fans in the compressor drive
drive alarm are faulty.
Compressor 2 The fans in the compressor drive
drive alarm are faulty.
Compressor 1 1. The fans in the compressor drive
drive alarm are faulty.
2. The air vents of the fans in the
compressor drive are dirty or
blocked.
3. The compressor drive heat sink is
dirty, so the heat exchange effect is
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
temperature.
1. Identify and repair the leaking
point, and refill refrigerant after
maintenance.
2. Calibrate or replace the
pressure sensor.
3. Maintain or replace the filter
dryer.
4. Maintain or replace the
expansion valve or the coil, and
reconnect cables.
5. Maintain or replace the indoor
fan.
6. Measure the ambient
temperature.
1. Maintain or replace the
compressor drive.
2. Maintain or replace the
compressor.
1. Maintain or replace the
compressor drive.
2. Maintain or replace the
compressor.
1. Maintain or replace the
compressor drive.
2. Maintain or replace the
compressor.
1. Maintain or replace the
compressor drive.
2. Maintain or replace the
compressor.
1. Check the fans in the
compressor drive.
1. Check the fans in the
compressor drive.
1. Check the fans in the
compressor drive.
2. Clean the air vents of the fans
in the compressor drive.
3. Clean the heat sink after
power-off.
4. Clean the cavity after
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