Huawei NetCol5000-A035 - Page 211

Symptom Possible Cause Solution
An indoor fan contactor
has an abnormal pickup.
Check whether the main
control board sends
signals to the indoor fan
contactor and whether
the contactor is
damaged.
An indoor fan is
damaged.
Replace the indoor fan.
The heating function is
unavailable.
The electric heater
temperature switch is
being protected.
Check whether the
temperature switch is
faulty. Replace the faulty
switch.
The electric heater circuit
breaker is o.
Check the electric heater
circuit breaker status.
An electric heater is
burnt out.
Disconnect the power
supply and check
whether the electric
heater is damaged by
checking the electric
heater resistance
properties with an
ohmmeter.
The water overows the
NetCol5000-A.
The drainpipe does not
connect to the pump, or
the lift between the
drainpipe and the water
chiller is set to an
appropriate value.
Ensure that the drainpipe
correctly connect to the
pump, and ensure that
the lift of the drainpipe
is shorter than 3.5 m.
The general circuit
breaker or water pump
circuit breaker is
disconnected.
Check the status of the
circuit breakers.
The water pump is
faulty.
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
o it.
NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width) 6 System Operation and Maintenance
Issue 17 (2020-10-22) Copyright © Huawei Technologies Co., Ltd. 201