Huawei NetCol8000-E220 User Manual page 209

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A291
-02
A291
-02
A296
-01
A296
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
MAJOR Compressor 1
overcurrent
alarm
MAJOR Compressor 2
overcurrent
alarm
CRITICA EEV 1 low
L superheat
degree alarm
CRITICA EEV 2 low
L superheat
degree alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The compressor
lacks oil.
2. The condenser
fins are dirty or
blocked.
3. The outdoor fan
is abnormal.
4. The refrigerant is
overfilled.
5. The compressor is
faulty.
1. The compressor
lacks oil.
2. The condenser
fins are dirty or
blocked.
3. The outdoor fan
is abnormal.
4. The refrigerant is
overfilled.
5. The compressor is
faulty.
1. The electronic
expansion valve
(EEV) coil is loose.
2. The EEV coil is
faulty.
3. The cables to the
electronic expansion
valve coil are loose
or damaged.
4. The EEV is faulty.
1. The electronic
expansion valve
(EEV) coil is loose.
2. The EEV coil is
faulty.
3. The cables to the
electronic expansion
valve coil are loose
or damaged.
4. The EEV is faulty.
Solution
1. Fill oil to the
compressor.
2. Clean the condenser
fins.
3. Maintain or replace
the outdoor fan.
4. Decrease certain
amount of refrigerant.
5. Maintain or replace
the compressor.
1. Fill oil to the
compressor.
2. Clean the condenser
fins.
3. Maintain or replace
the outdoor fan.
4. Decrease certain
amount of refrigerant.
5. Maintain or replace
the compressor.
1. Reinstall the EEV
coil.
2. Replace the EEV coil.
3. Check and maintain
the cables to the EEV
coil.
4. Replace the EEV.
1. Reinstall the EEV
coil.
2. Replace the EEV coil.
3. Check and maintain
the cables to the EEV
coil.
4. Replace the EEV.
200