Gree GMV-Y120WL/A-T User Manual

Photovoltaic Multi VRF
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(6) Calculate the quantity of refrigerant that needs to be added according to the pipe
length. Pre-charge the refrigerant. In case that the required charging quantity is not
reached while refrigerant can’t be added, record the quantity of refrigerant that still
needs to add and complement the quantity during test operation. For details of adding
refrigerant during test operation, see below.
(7) After refrigerant is added, make sure valves of outdoor unit are completely open.
(8) For the convenience of troubleshooting during debugging, unit shall be connected to a
PC with applicable debugging software. Make sure unit’s real-time data can be
checked through this computer. The installation and connection of debugging software
can be found in the Service Manual.
(9) Before test operation, make sure unit is power on and compressor has been
preheated for more than 8 hours. Touch the unit to check whether it’s normally
preheated. If yes, start test operation. Otherwise, compressor might be damaged.
5.2.2 Test Operation and Debugging
Description of test operation procedures and main board display of ODU
Description of each stage of debugging progress
——
Debugging
code
Progress code
Status code
Code meaning and operation
method
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
01_ Set master
unit
00
ON
OF/AC/AH
ON
A0
ON
System is not debugged.
db
On
01
On
OC
On
Hold main board’s SW7
button for 5s to start
debugging. Main board will
display as said in the left. 2s
later, next step starts.
02_ Allocate
addresses
db
On
02
On
Ad
Blink
System is allocating
addresses. 10s later, display
as below:
db
On
02
On
L7
Blink
No master indoor unit. Display
will be on for 1min, during
which master IDU can be set
manually. If not, system will set
the unit with minimum IP
address as the master IDU.
db
On
02
On
OC
On
Allocation is finished. 2s later,
next step starts.
03_ Confirm
the quantity of
db
On
03
On
01
Blink
System is confirming. 1s later,
next step starts.

Gree GMV-Y120WL/A-T Specifications

General

Brand	Gree
Model	GMV-Y120WL/A-T
Category	Air Conditioner
Language	English