Huawei NetCol5000-A050 User Manual page 254

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Symptom
The
compressor
discharge
temperatur
e is too
high.
The
compressor
exhaust
pressure is
too low.
The
exhaust
pressure of
the
compressor
is too high.
The
compressor
suction
pressure is
too low or
liquid
returns.
Issue 08 (2021-09-17)
Possible Cause
The compressor does not
work.
The refrigerant loop or a
component is blocked.
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.)
Air exists in the cooling
system.
Heat dissipation is poor
because of blockages in the
condenser.
An outdoor fan fails.
Refrigerant is insufficient.
The outdoor fan speed
controller fails.
Refrigerant is insufficient.
Refrigerant is leaking.
The refrigerant is overfilled.
The outdoor fan is faulty.
The refrigerant filled is
insufficient.
The indoor temperature is too
low.
Filters are clogged with dirt.
The external excess pressure is
too high, and air decreases.
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10 Troubleshooting
Solution
Check whether the drive is faulty.
Replace it if it is faulty.
Clean the blockage in the
refrigerant loop.
Install the outdoor unit in a
correct position, without
exposure to direct sunlight and
with an appropriate spacing.
Exhaust air, and examine and
repair the pipeline.
Clean the condenser fins.
Check whether the outdoor fan
works.
Increase the amount of
refrigerant filled.
Replace the speed controller.
Increase the amount of
refrigerant filled.
Check the pipeline for any
leakage.
Fill refrigerant according to the
refrigerant filling requirements.
Check that the outdoor fan is
running properly.
Add the refrigerant.
Change the temperature setting.
Replace the filters.
Check whether the air duct is
blocked.
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