Gree GMV-Y120WM/C-F, Owner'S Manual

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Photovoltaic Direct-driven Inverter VRF
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button on the master module for at least 5s to enable debugging;
Step 6: Wait. Unit will then start progress 01 and 02; in progress 01, if master unit is not
correctly set, progress 01 will show the following errors:
Debugging
Code
Progress Code Status Code
Meaning
Progress
LED1 LED2 LED3
Code
Display
status
Code
Display
status
Code
Display
status
01_01 Set
up master
unit:
db light 01 light CC light
System doesn’t have master unit. Reset
master unit.
db light 01 light CF light
More than 2 master units are set. Reset
master unit.
db light 01 light OC light
Master unit is successfully set. Start next
progress.
According to the above errors, reset the master unit as instructed in Master Unit Setup
SA8_MASTER_S. After reset is finished, start debugging again.
In progress 02, if master IDU is not detected, then progress 02 will show the following
errors:
LED1 LED2 LED3
Function code Display mode
Current
progress
Display mode Current status Display mode
db light 02 light L7 blink
At this time, all buttons are ineffective. Set master IDU in 1min via debugging software. If
master IDU is not set in 1min, system will set up a master IDU randomly. After that, system will
start next progress.
Step 7: in progress 03, the quantity of modules needs to be confirmed manually. Main
board of each module will display:
Debugging code Progress code Status code
Progress
LED1 LED2 LED3
Code
Display
status
Code
Display
status
Code
Display
status
03_Quantity of
modules
db light 03 light
Quantity of
modules
blink
If the quantity displayed is the same with actual quantity, then press SW7 confirmation
button on the master unit to confirm it. Unit will start next progress:
Debugging code Progress code Status code
Progress
LED1 LED2 LED3
Code
Display
status
Code
Display
status
Code
Display
status
03_Confirm the
quantity of
modules
db light 03 light OC light
If the quantity displayed is different from actual quantity, then disconnect power and check
whether communication wire among each module is correctly connected. After the check, start