Huawei NetCol5000-A025 - Page 225

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a2
8
d
Comp
low
suction
pressur
e alarm
CRI
TIC
AL
Generates
an alarm
and shuts
down the
compressor.
1. The refrigerant
leaks.
2. The pressure
displayed is
dierent from
the actual
pressure.
3. The
lter dryer
is blocked.
4. The expansion
valve is blocked
or stuck, or the
expansion valve
coil and cable
connections are
faulty.
5. The indoor fan is
faulty.
6. The ambient
temperature is
below the lower
threshold.
1. Identify and repair
the leaking point,
and rell
refrigerant after
maintenance.
2. Calibrate or replace
the pressure sensor.
3. Maintain or replace
the
lter dryer.
4. Maintain or replace
the expansion
valve or the coil,
and reconnect
cables.
5. Maintain or replace
the indoor fan.
6. Measure the
ambient
temperature.
a2
8e
Compre
ssor
drive
alarm
CRI
TIC
AL
Generates
an alarm
and shuts
down the
compressor.
1. The compressor
drive is faulty.
2. The compressor
is faulty.
1. Maintain or replace
the compressor
drive.
2. Maintain or replace
the compressor.
Compre
ssor
drive
alarm
MA
JOR
Generates
an alarm
and shuts
down the
compressor.
The fans in the
compressor drive
are faulty.
Check the fans in the
compressor drive.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 6 System Operation and Maintenance
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 215