Huawei NetCol8000-C070 User Manual page 162

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Symptom
The temperature
control of a
NetCol8000-C is
abnormal.
The NetCol8000-C
leaks at the
bottom
Drainage capacity
of the
NetCol8000-C
decreases.
The heating
function fails.
Issue 02 (2020-08-30)
Possible Cause
The valve plug of the
chilled water valve is
reversely installed.
The chilled water valve
is stuck.
The temperature and
humidity thresholds are
improper.
Alarms, such as water
overflow and no
refrigerant output, are
generated.
The chilled water valve
is faulty or the cable
connection is incorrect.
The thermal insulation
foam of the
NetCol8000-C is
damaged.
The drainpipe is blocked. Ensure that the drainpipes are
The pipes leak.
The water inlet solenoid
valve cannot be closed.
The drainpipe is bend or
trapped.
The electric heater
temperature switch is
being protected.
An electric heater is
burnt out.
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6 System Operation and Maintenance
Reference Solution
Check that the chilled water
valve plug is correctly installed.
Replace the chilled water valve.
Adjust the temperature and
humidity thresholds.
Check the alarm causes and
clear the alarm manually.
Replace the actuator or
reconnect the cable.
Check whether thermal
insulation foam of the
NetCol8000-C is securely
installed and repair the
damaged thermal insulation
tube.
not over-bent and the drainpipe
connectors are securely installed.
Check the pipes and weld the
pipe or fasten related bolts if the
pipes leak.
Replace the water inlet solenoid
valve.
Check that drainpipes are free
from bends and traps. Ensure
that the height difference for
drainage is enough.
Check whether the temperature
switch is faulty. Replace the
faulty switch.
Disconnect the power supply
and check whether the electric
heater is damaged by checking
the electric heater resistance
properties with an ohmmeter.
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