Huawei NetCol8000-E220 User Manual page 156

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Alarm Alarm
ID Severity
A28C- CRITICA
02 L
A28C- CRITICA
02 L
A28C- CRITICA
04 L
Issue 02 (2019-10-10)
Alarm
Probable Cause
Name
6. The refrigerant is overfilled.
7. The exhaust fan is faulty.
Comp 1 high 1. The input power of the outdoor
discharge unit has an open phase, incorrect
pressure phase sequence, or is unavailable.
alarm
2. Cables to the indoor or outdoor
fan are not properly connected.
3. The condenser fins are dirty or
blocked.
4. The outdoor fan or its drive is
faulty.
5. The pressure displayed is
different from the actual pressure.
6. The refrigerant is overfilled.
7. The exhaust fan is faulty.
Comp 2 high 1. The input power of the outdoor
discharge unit has an open phase, incorrect
pressure phase sequence, or is unavailable.
alarm
2. Cables to the indoor or outdoor
fan are not properly connected.
3. The condenser fins are dirty or
blocked.
4. The outdoor fan or its drive is
faulty.
5. The pressure displayed is
different from the actual pressure.
6. The refrigerant is overfilled.
7. The exhaust fan is faulty.
Comp 1 high 1. The input power of the outdoor
discharge unit has an open phase, incorrect
pressure phase sequence, or is unavailable.
alarm
2. Cables to the indoor or outdoor
fan are not properly connected.
3. The condenser fins are dirty or
blocked.
4. The outdoor fan or its drive is
faulty.
5. The cables to the high pressure
switch are loose or damaged.
6. The high pressure switch is
faulty.
7. The refrigerant is overfilled.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Solution
refrigerant.
7. Maintain or replace the
exhaust fan.
1. Check that the input power is
normal.
2. Check the cables to the indoor
and outdoor fans.
3. Clean the condenser fins.
4. Maintain or replace the
outdoor fan or its drive.
5. Calibrate or replace the
pressure sensor.
6. Decrease certain amount of
refrigerant.
7. Maintain or replace the
exhaust fan.
1. Check that the input power is
normal.
2. Check the cables to the indoor
and outdoor fans.
3. Clean the condenser fins.
4. Maintain or replace the
outdoor fan or its drive.
5. Calibrate or replace the
pressure sensor.
6. Decrease certain amount of
refrigerant.
7. Maintain or replace the
exhaust fan.
1. Check the input power of the
outdoor unit.
2. Check the cables to the indoor
and outdoor fans.
3. Clean the condenser fins.
4. Maintain or replace the
outdoor fan or its drive.
5. Check cables to the high
pressure switch.
6. Maintain or replace the high
pressure switch.
7. Decrease certain amount of
refrigerant.
8. Maintain or replace the
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