Symptom
Possible Cause
Solution
discharge
temperatur
e is too
high.
The outdoor unit is installed in
an inappropriate position.
(The outdoor unit should not
be exposed to direct sunlight
and must be installed at a
specified spacing according to
the installation guide.)
Install the outdoor unit in a
correct position, without
exposure to direct sunlight and
with an appropriate spacing.
Air exists in the cooling
system.
Exhaust air, and examine and
repair the pipeline.
Heat dissipation is poor
because of blockages in the
condenser.
Clean the condenser fins.
An outdoor fan fails.
Check whether the outdoor fan
works.
Refrigerant is insufficient.
Increase the amount of
refrigerant filled.
The
compressor
discharge
pressure is
too low.
The outdoor fan speed
controller fails.
Replace the speed controller.
Refrigerant is insufficient.
Increase the amount of
refrigerant filled.
Refrigerant is leaking.
Check the pipeline for any
leakage.
The
compressor
suction
temperatur
e is too
low or
liquid
returns.
The refrigerant filled is
insufficient.
Add the refrigerant.
The indoor temperature is too
low.
Change the temperature setting.
Filters are clogged with dirt.
Replace the filters.
The external excess pressure is
too high, and air decreases.
Check whether the air duct is
blocked.
The condensing pressure is too
low.
Check the condenser.
The
compressor
generates
excessive
noises.
Liquid returns in a compressor. Check whether the oil
temperature and exhaust
temperature are within a normal
range.
Refrigerant oil is insufficient.
Add refrigerant oil.
The transport sheet metal is
not removed from a
compressor.
Remove the sheet metal.
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
9 Troubleshooting
Issue 05 (2020-10-10)
Copyright © Huawei Technologies Co., Ltd.
217
