Huawei NetCol5000-A035 User Manual page 211

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width)
Symptom
The heating function is
unavailable.
The water overflows the
NetCol5000-A.
Issue 17 (2020-10-22)
Possible Cause
An indoor fan contactor
has an abnormal pickup.
An indoor fan is
damaged.
The electric heater
temperature switch is
being protected.
The electric heater circuit
breaker is off.
An electric heater is
burnt out.
The drainpipe does not
connect to the pump, or
the lift between the
drainpipe and the water
chiller is set to an
appropriate value.
The general circuit
breaker or water pump
circuit breaker is
disconnected.
The water pump is
faulty.
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6 System Operation and Maintenance
Solution
Check whether the main
control board sends
signals to the indoor fan
contactor and whether
the contactor is
damaged.
Replace the indoor fan.
Check whether the
temperature switch is
faulty. Replace the faulty
switch.
Check the electric heater
circuit breaker status.
Disconnect the power
supply and check
whether the electric
heater is damaged by
checking the electric
heater resistance
properties with an
ohmmeter.
Ensure that the drainpipe
correctly connect to the
pump, and ensure that
the lift of the drainpipe
is shorter than 3.5 m.
Check the status of the
circuit breakers.
Check the alarms
displayed on the LCD,
cables to the pump,
whether the water pump
runs properly, and
replace the water pump
if necessary. Switch the
plug screw, as shown in
Figure 5-7, to discharge
air, then switch off it.
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