Huawei NetCol8000-E220 User Manual page 199

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A28C
-04
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
CRITICA Comp 1 high
L discharge
pressure
alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The input power
of the outdoor unit
has an open phase,
incorrect phase
sequence, or is
unavailable.
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.
8. The exhaust fan
is faulty.
Solution
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 exhaust fan.
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