Huawei NetCol5000-C030H90D0 User Manual page 154

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
Symptom
Water enters the
cabinet.
The temperature
control function
of the
NetCol5000-C
does not work
properly.
The humidity
and temperature
sensor cannot
detect the
humidity and
temperature.
Issue 03 (2020-08-30)
Possible Causes
1. The thermal insulation
tube of the
NetCol5000-C is
damaged.
2. The condensate
drainpipe is blocked.
3. The pipes leak.
1. The chilled water valve
is stuck and cannot be
adjusted.
2. The humidity detected
by the humidity and
temperature sensor is
larger than the actual
humidity, which results
in anti-condensation
protection being
triggered frequently for
the NetCol5000-C.
3. The temperature and
humidity set points are
improper.
4. Alarms, in-cabinet
overflow, smoke sensor,
and no refrigerant
output are generated.
1. Parameter settings on
the controller are
incorrect.
2. DIP switches of the
humidity and
temperature sensor are
incorrectly set.
3. The humidity and
temperature sensor is
faulty.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
1. Check whether thermal
insulation tube of the
NetCol5000-C is securely
installed and repair the
damaged thermal insulation
foam.
2. Check that the pipes of the
drainage system are not
over-bent and that the
condensate pump (optional)
and the liquid level detector
are not faulty.
3. Check the pipes and weld
the pipe or fasten related
bolts if the pipes leak.
1. Replace the chilled water
valve.
2. Check whether the ambient
temperature of the humidity
and temperature sensor is
too high. Ensure that the
humidity and temperature
sensor is located at a proper
position. If the position is
proper but the fault persists,
replace the humidity and
temperature sensor.
3. Adjust the temperature and
humidity set points.
4. Check the alarm causes and
clear the alarm manually.
1. Check that the humidity and
temperature sensor is
enabled on the controller.
2. Check that DIP switches of
the humidity and
temperature sensor map the
corresponding aisle.
3. If the fault persists after the
preceding operations, replace
the humidity and
temperature sensor.
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