Check
Item
Expected Result
Troubleshooting
Pipe
The refrigerant pipe does not
leak or corrode, and is properly
wrapped with thermal
insulation foam.
Repair the leakage points and
rewrap thermal insulation foam.
The liquid sight glass is almost
green, or not totally turns
yellow.
If the sight glass has completely
turned yellow, there is too much
water in the pipe. To solve the
problem, empty refrigerant in the
pipe, vacuumize the system, drain
water, and then charge new
refrigerant.
NOTE
If the sight glass does not obviously turn
green, use a blow drier to blow wind to
the filter until the sight glass is green.
Wear working gloves and
touch the compressor angle
valve, needle valve, and
welding points in the
refrigerant pipe to check
whether there are oil stains.
If there are oil stains, check whether
the suction and discharge pressure of
the compressor is within the normal
ranges. If the pressure is beyond the
normal range, contact Huawei
technical support.
No water exists under the
water pipe or on the thermal
insulation foam.
● If drops of water are evenly
distributed, wipe off them with
dry cloth.
● If there are large water marks,
close the water inlet sluice and
handle the leak points. If the
thermal insulation foam is
damaged or missing, lay out new
thermal insulation foam.
The refrigerant pipe support is
secure and intact.
Replace the pipe support and secure
it again.
Indoor
fan
The indoor fan guard is not
deformed, and the fan blades
are not damaged.
Replace the fan.
The indoor fan runs smoothly.
Take out the foreign matter.
The screws on the indoor fan
are not loose or distorted.
Tighten the screws using a 10#
socket wrench.
8.2.2 Quarterly Maintenance
lists quarterly maintenance items for the indoor unit.
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
8 Operation and Maintenance
Issue 05 (2020-10-10)
Copyright © Huawei Technologies Co., Ltd.
210
