Huawei NetCol5000-A021 User Manual page 165

NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
Alarm Alarm Name
ID
a048 Supply-air HT
a049 Supply-air LT
a050 Cold-aisle HT
Issue 03 (2020-01-10)
Alarm Impact
Severity
Critical The alarm is
generated.
Warning The alarm is
generated.
Critical The alarm is
generated.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes Solution
different from
the actual
3. Maintain or replace the
pressure.
3. The filter dryer
4. Maintain or replace the
is blocked.
4. The expansion
NOTE
valve is
blocked.
1. The load is 1. Add more smart cooling
high, or the
refrigeration
2. Check other causes if the
capacity is
insufficient.
3. Check the ambient temp.
2. The supply air
4. Adjust the supply-air HT
temp is higher
than the
5. Calibrate or replace the
supply-air HT
alarm threshold
during startup.
3. The ambient
temp is high.
4. The supply-air
HT alarm
threshold is
inappropriate.
5. The temp
displayed is
different from
the actual temp.
1. The load is low. 1. Contact Huawei technical
2. The ambient
temp is low. 2. Check the ambient temp.
3. The supply-air 3. Adjust the supply-air LT
LT alarm
threshold is
4. Calibrate or replace the
inappropriate.
4. The temp
5. Maintain or replace the air
displayed is
different from
the actual temp.
5. The air filters
are blocked.
1. The cold-aisle 1. Adjust the position of the
T/H sensors are
located in
2. Check other causes if the
inappropriate
position.
3. Adjust the supply-air HT
2. The ambient
temp is high.
suction pressure sensor.
filter dryer.
expansion valve.
After the alarm is rectified, click
Manual clear on the alarm page.
product units.
alarm persists after startup.
alarm threshold.
abnormal sensors.
support.
alarm threshold.
abnormal sensors.
filters.
cold-aisle T/H sensors.
alarm persists after startup.
alarm threshold.
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