Huawei NetCol5000-A050 User Manual page 241

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Alarm
ID
A28C-0
1
Issue 08 (2021-09-17)
Alarm Name Alar
m
Seve
rity
Compressor MAJ
high discharge OR
pressure alarm
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
1. The input power
of the outdoor
unit has an open
phase, incorrect
phase sequence,
or is unavailable.
2. Cables to the
indoor and
outdoor units 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.
9 Alarm Reference
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. Calibrate or replace
the pressure sensor.
6. Decrease certain
amount of refrigerant.
7. Maintain or replace
the exhaust fan.
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