Huawei NetCol5000-A050 User Manual page 244

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Alarm
ID
A28D-0
2
A28E-0
1
A28E-0
2
A28E-0
4
Issue 08 (2021-09-17)
Alarm Name Alar
m
Seve
rity
Compressor CRITI
low suction CAL
pressure alarm
Compressor MAJ
drive alarm OR
Compressor CRITI
drive alarm CAL
Compressor MAJ
drive alarm OR
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
1. The refrigerant
leaks.
2. The solenoid
valve is faulty.
3. The pressure
displayed is
different from the
actual pressure.
4. The filter dryer
is blocked.
5. The expansion
valve is blocked or
stuck, or the
expansion valve
coil and cable
connections are
faulty.
6. The indoor fan
is faulty.
7. The ambient
temperature is
below the lower
threshold.
1. The compressor
drive is faulty.
2. The compressor
is faulty.
1. The compressor
drive is faulty.
2. The compressor
is faulty.
The fans in the
compressor drive
are faulty.
9 Alarm Reference
Solution
1. Identify and repair
the leaking point, and
refill refrigerant after
maintenance.
2. Maintain or replace
the solenoid valve coil
or the solenoid valve.
3. Calibrate or replace
the pressure sensor.
4. Maintain or replace
the filter dryer.
5. Maintain or replace
the expansion valve or
the coil, and reconnect
cables.
6. Maintain or replace
the indoor fan.
7. Measure the ambient
temperature.
1. Maintain or replace
the compressor drive.
2. Maintain or replace
the compressor.
1. Maintain or replace
the compressor drive.
2. Maintain or replace
the compressor.
1. Check the fans in the
compressor drive.
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