Huawei NetCol8000-C070 User Manual page 170

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Table 6-4 NetCol8000-C troubleshooting
Symptom
The NetCol8000-C
generates
abnormal sound.
The fan fails to
start.
The northbound
communication is
abnormal.
The T/H sensor
cannot detect the
humidity and
temperature.
Condensate water
exists on the
panel surface.
The temperature
control of a
NetCol8000-C is
abnormal.
Issue 07 (2021-12-30)
Possible Cause
The fan, pipe, or base is
loose, or there is no
shock absorption bar
between the base and
the smart cooling
product.
The general circuit
breaker or indoor fan
circuit breaker is not
switched on.
The fan is damaged.
The northbound
communications cable is
incorrectly connected.
The settings on the
display module are
incorrect.
The ambient
temperature and
humidity sensor is
faulty.
The communications
cable to the T/H module
is incorrectly connected.
The operating
environment of the
NetCol8000-C is
extremely humid.
The temperature
threshold is set to a
much smaller value.
The valve plug of the
chilled water valve is
reversely installed.
The chilled water valve
is stuck.
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6 Maintenance
Troubleshooting
Secure the loose components, or
add shock absorption bars
between the base and the smart
cooling product.
Check that the general switch
and fan switch are ON.
Replace the fan.
Check that the northbound
communications cable is
connected to the northbound
COM port on the main control
module.
Ensure that the corresponding
T/H sensor is enabled on the
display module.
If the T/H sensor still cannot
detect the temperature and
humidity after the sensor is
enabled, replace the sensor in
time.
Check whether a northbound
communications cable is
incorrectly connected to the T/H
sensor RS485/12V port on the
front panel of the main control
module.
Enhance the airtightness of the
equipment room.
Adjust the temperature and
humidity thresholds.
Check that the chilled water
valve plug is correctly installed.
Replace the chilled water valve.
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