Huawei NetCol5000-A035 User Manual page 183

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width)
Al
ar
m
ID
a0
46
a0
48
Issue 17 (2020-10-22)
Alar Alar Defau
m m lt
Seve Value
rity
Com Majo N/A
p r
freez
e
point
prote
ction
Supp Critic 40°C
ly-air al
HT
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Impac Possible Cause
t
The 1. The refrigerant
alarm leaks.
is
2. The solenoid
genera
valve is faulty.
ted,
3. The cables to the
and
low press sensor
the
are loose or
compr
damaged.
essor
4. The low press
shuts
sensor is faulty.
down
forcibl
5. The filter dryer is
y.
blocked.
6. The expansion
valve is blocked.
The 1. The load is high,
alarm or the
is refrigeration
genera capacity is
ted, insufficient.
and
2. The supply air
the
temp is higher
rotatio
than the supply-
nal
air HT alarm
speed
thres during
of the
startup.
compr
3. The ambient
essor
temp is high.
increas
4. The supply-air
es.
HT alarm thres is
inappropriate.
5. The temp
displayed is
different from
the actual temp.
Solution
1. Check for any
leakages. Fill
refrigerant after
maintenance or
replacement.
2. Maintain or
replace the
solenoid coil or
the solenoid
valve.
3. Check the
cables to the
low press
sensor.
4. Maintain or
replace the low
press sensor.
5. Maintain or
replace the
filter dryer.
6. Maintain or
replace the
expansion valve.
1. Add more smart
cooling product
units.
2. Check other
causes if the
alarm persists
after startup.
3. Check the
ambient temp.
4. Adjust the
supply-air HT
alarm thres.
5. Calibrate or
replace the
abnormal
sensors.
173