Huawei NetCol8000-A013 User Manual page 95

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (600 mm Width)
Cate Sympto Possible Cause
gory m
The outdoor temperature is
too low.
The Refrigerant is insufficient.
compress
Refrigerant leaks.
or
suction
pressure
is too
low.
The condensing pressure is
too low.
Liquid is The indoor temperature is
returning too low.
to the
The air filter is dirty or
compress
blocked.
or.
The EEV coil is faulty.
The refrigerant is overfilled.
The Liquid is returning to the
compress compressor.
or
Refrigerant oil is
generates
insufficient.
too much
operating
noise. (It
is
common
that the
compress
or
generates
much
noise
when it
shuts
down.)
Issue 04 (2022-11-25) Copyright © Huawei Digital Power Technologies Co., Ltd.
5 System Operation and Maintenance
Measure
No action is required.
Fill more refrigerant.
Apply soapy water or use a halogen leak
detector to check for any leakage. If leaking
points are found, retrieve the refrigerant and
weld the leaking points again. Contact the
technical support.
Check whether the outdoor temperature is too
low and whether the outdoor fan is under
control.
Increase the temperature setting.
Replace the air filter.
Replace the EEV coil.
Decrease a certain amount of refrigerant.
Check whether the suction superheat degree of
the EEV is within the normal range (4–10°C).
Add refrigerant oil.
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