NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1. The load is low.
2. The ambient temp is low.
3. The supply-air LT alarm
threshold is
inappropriate.
4. The temp displayed is
different from the actual
temp.
5. The air filters are
blocked.
1. Please consult Huawei
technical support.
2. Check other causes if the
alarm persists after
startup.
3. Adjust the supply-air LT
alarm threshold.
4. Calibrate or replace the
abnormal sensors.
5. Maintain or replace the
air filters.
The alarm
is
generated,
and the
rotational
speed of
the
compresso
r
increases.
1. The T/H sensors are
located in inappropriate
position.
2. The load is high or the
refrigeration capacity is
insufficient.
3. The ambient temp is
high.
4. The cold-aisle HT alarm
threshold is
inappropriate.
5. The temp displayed is
different from the actual
temp.
1. Adjust the position of the
T/H sensors.
2. Add more air conditioner
units or Consult
Huawei technical
support.
3. Check other causes if the
alarm persists after
startup.
4. Adjust the cold-aisle HT
alarm threshold.
5. Calibrate or replace the
abnormal sensors.
1. The T/H sensors are
located in inappropriate
position.
2. The load is high or the
refrigeration capacity is
insufficient.
3. The ambient temp is
high.
4. The hot-aisle HT alarm
threshold is
inappropriate.
5. The temp displayed is
different from the actual
temp.
1. Adjust the position of the
T/H sensors.
2. Add more air conditioner
units or Consult
Huawei technical
support.
3. Check other causes if the
alarm persists after
startup.
4. Adjust the hot-aisle HT
alarm threshold.
5. Calibrate or replace the
abnormal sensors.
Supply-air
1 temp
invalid
Supply-air
2 temp
invalid
1. The cables to the T/H
sensor are loose or
damaged
2. The T/H sensor is faulty.
1. Remove dirt or water
from the T/H sensor.
2. Maintain or replace the
T/H sensor.
Maintain or replace the PSU.
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