Huawei NetCol8000-A045D User Manual page 228

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Symptom
An indoor
fan fails to
start.
The
heating
function is
unavailable
.
No water is
supplied to
the water
inlet
solenoid
valve of
the
humidifier.
The water
overflows
the
NetCol800
0-A.
Issue 05 (2020-10-10)
Possible Cause
The switch of the indoor fan is
not turned on.
An indoor fan is damaged.
The interconnection terminals
for the fans are not securely
connected.
The electric heater
temperature switch is being
protected.
The electric heater is not
switched on.
An electric heater is burnt out.
The upstream water supply is
faulty or the water pressure is
below the lower threshold.
The water inlet solenoid valve
is blocked or faulty.
The cable to the water inlet
solenoid valve is incorrectly
connected.
The liquid level detector is
faulty.
The inlet pipe and drainpipe
leak.
The self-drainpipe is blocked.
Copyright © Huawei Technologies Co., Ltd.
9 Troubleshooting
Solution
Check the switch of the indoor
fan.
Replace the indoor fan.
Secure the interconnection
terminals again.
Check the temperature switch
and replace it if it is faulty.
Check the electric heater switch.
Disconnect the power supply and
check whether the electric heater
is damaged by checking the
electric heater resistance
properties with an ohmmeter.
Restore the water supply.
Replace the water inlet solenoid
valve.
Reconnect the cable.
Check the alarm. Check cable
connections for high and low
liquid level detectors. Check
whether the liquid level detectors
are damaged. If necessary,
replace the liquid level detectors.
Check the inlet pipe and
drainpipe and the connectors.
Rectify any leakage and fasten
the connectors.
Check that no blocks and frost in
the self-drainpipe.
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