Huawei NetCol8000-E220 User Manual page 210

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A296
-02
A296
-02
A298
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
CRITICA EEV 1 low
L superheat
degree alarm
CRITICA EEV 2 low
L superheat
degree alarm
MAJOR Spray
overflow
alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The electronic
expansion valve
(EEV) coil is loose.
2. The EEV coil is
faulty.
3. The EEV is faulty.
4. The cables to the
electronic expansion
valve coil are loose
or damaged.
1. The electronic
expansion valve
(EEV) coil is loose.
2. The EEV coil is
faulty.
3. The EEV is faulty.
4. The cables to the
electronic expansion
valve coil are loose
or damaged.
1. The spray
overflow pipe is
dirty or blocked.
2. The float does
not drop because
the spray high float
is faulty.
Solution
1. Reinstall the EEV
coil.
2. Replace the EEV coil.
3. Replace the EEV.
4. Check and maintain
the cables to the EEV
coil.
1. Reinstall the EEV
coil.
2. Replace the EEV coil.
3. Replace the EEV.
4. Check and maintain
the cables to the EEV
coil.
1. Clear the spray
overflow pipe.
2. Maintain the spray
high float.
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