Gree GMV-V72W/A-F Owner's Manual page 55

Ultra Heat GMV Multi VRF
progress
12_Confirm
debugging startup
If it's confirmed, press SW4 confirmation button. Then unit will display as below and start next
progress.
——
progress
12_Confirm
debugging startup
Step 16: After unit is confirmed to start debugging, system select cooling/heating mode according to
ambient temperature automatically.
A If cooling mode is selected, relevant display is as below:
—— Debugging code
LED1
progress
Code
db
Error
code
15_Cooling
debugging
XXXX/
Error
code
B If heating mode is selected, relevant display is as below:
—— Debugging code
LED1
progress
Code
db
Error
code
16_Heating
debugging
XXXX/
Error
code
Step 17: If there's no error during operation for about 30min, system will automatically confirm that
LED1
Code Display status
db Light
Debugging code
LED1
Code Display status
db Light
Progress code
LED2
Display Display
code
status status
Light 15 Light
Light
Light
Progress code
LED2
Display Display
code
status status
Light 16 Light
Light
Light
LED2
code Display status
12 Blink
Progress code
LED2
code Display status
12 Light
Status code
LED3
Display
Code
status
Debugging is enabled in cooling mode
UC Light (debugging mode, auto-selected by
system).
ODU Error occurs during debugging in
cooling mode.
System detects error in indoor error.
XXXX is the project code of the faulted
IDU. 3s later, error code is displayed.
For example, IDU no. 100 has d5 error,
then LED3 displays like this: 01 (2s
later) 00 (2s later) d5, and repeat again.
Status code
LED3
Display
Code
status
Debugging is enabled in heating mode
UH Light (debugging mode, auto-selected by
system).
ODU Error occurs during debugging in
heating mode.
System detects error in indoor pipeline.
XXXX is the project code of the faulted
IDU. 3s later, error code is displayed.
For example, IDU no. 100 has d5 error,
then LED3 displays like this: 01 (2s
later) 00 (2s later) d5, and repeat
again.
51
LED3
Code Display status
AE Blink
Status code
LED3
Code Display status
oC Light
Meaning
Meaning