Huawei NetCol5000-A050 - Page 240

Alarm
ID
Alarm Name Alar
m
Seve
rity
Possible Cause Solution
A28C-0
8
Compressor
high discharge
pressure alarm
CRITI
CAL
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
ns are dirty or
blocked.
4. The outdoor fan
or its drive is
faulty.
5. The high
pressure switch is
faulty.
6. The refrigerant
is
overlled.
7. The exhaust fan
is faulty.
1. Check the input
power of the outdoor
unit.
2. Check the cables to
the indoor and outdoor
fans.
3. Clean the condenser
ns.
4. Maintain or replace
the outdoor fan or its
drive.
5. Maintain or replace
the high pressure
switch.
6. Decrease certain
amount of refrigerant.
7. Maintain or replace
the exhaust fan.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 9 Alarm Reference
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 230