Huawei FusionModule5000 Maintenance Manual page 104

FusionModule5000 Smart Modular Data Center
Maintenance Guide (ECC800)
Symptom
The NetCol5000-C
leaks.
A NetCol5000-C
is abnormal.
The humidity and
temperature sensor
Issue 01 (2019-03-05)
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 jumper cap of the
chilled water valve is not
connected to the right
position.
2. The valve plug of the
chilled water valve is
reversely installed.
3. The chilled water valve
is stuck.
4. 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.
5. The temperature and
humidity set points are
improper.
6. Alarms, such as full
water, in-cabinet
overflow, smoke
detector, and no
refrigerant output are
generated.
1. Parameter settings on
the controller are
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Troubleshooting
and D are blown. If yes, replace
the fuses.
3. Check whether the relay works
properly. If not, replace the relay.
4. Check whether the water pump
works properly. If not, replace the
water pump.
5. Check that the pipes are not bent
by a large angle.
1. Check whether thermal insulation
tube of the NetCol5000-C is
securely installed and repair the
damaged thermal insulation foam.
2. Ensure that the drainpipes are not
bent by a large angle, the drainpipe
connectors are securely installed,
the condensate pump is not faulty,
and the floats are not faulty.
3. Check the pipes and weld the pipe
or fasten related bolts if the pipes
leak.
1. Check the "W1" jumper of the
chilled water valve controller.
Ensure that the jumper cap is on
the right two pins.
2. Check that the chilled water valve
plug is correctly installed.
3. Replace the chilled water valve
5.2.12 Replacing a Water Valve
Actuator and Chilled Water
4. 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.
5. Adjust the temperature and
humidity set points.
6. Check the alarm causes and clear
the alarm manually.
1. Check that the humidity and
temperature sensor is enabled on
Valve.
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