Maintenance; Drain Pipe - Gree GMV-VQ280WM/C-X Owner's Manual

Debugging Parameter Reference Value for GMV Heat Recovery DC Inverter VRF Unit
No. Debugging item
System
Indoor
parameter
16 unit's
System
parameter
parameter
Drainage
17
system
18 Other
5 Operation Instruction
For instructions on how to use the air conditioner, please refer to the user manual of wired
controller or remote controller.

6 Maintenance

Regular inspection and maintenance can extend the service life of the air conditioning unit.
6.1 Heat Exchanger of Outdoor Unit
The heat exchanger of outdoor unit should be cleaned regularly. A vacuum cleaner can be used
with a nylon brush to clean dust and debris from the surface of the heat exchanger. If there is
compressed air source, the compressed air can be used to blow dust from the surface of the heat
exchanger. Do not wash it with tap water.

6.2 Drain Pipe

The drain pipe should be checked regularly to allow the condensate to drain smoothly.
6.3 Precautions at the Beginning of Using Season
(1) Check whether all air inlet and air outlet of indoor unit and outdoor unit are not blocked.
(2) Check if the grounding is reliable.
(3) Check if the battery of the remote controller has been replaced.
(4) Check if the air filter is properly installed.
(5) When restart up the unit after it has been stop operation for a long time, turn on the air
conditioner's power switch 2 hours before starting the operation to preheat the outdoor
compressor crankcase.
(6) Check if the outdoor unit is installed firmly. If there is any abnormality, please contact Gree
service center.
Parameter name Unit
Opening of indoor
electronic expansion PLS
valve
— —
— —
GMV Heat Recovery DC Inverter VRF
Reference value
● 2000PLS electronic expansion valve: the
opening is adjusted automatically in the
range of 200~2000PLS;
● 480PLS electronic expansion valve: the
opening is adjusted automatically in the
range of 70~480PLS.
● The indoor unit drains smoothly and
thoroughly, and the condensate water pipe
has no slope water storage; the outdoor
unit can drain water from the drain pipe
without dripping directly from the unit
foundation.
●There is no abnormal noise for the
operation of the compressor, indoor fan and
outdoor fan. The unit is running normally.
68
Remark
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