Gree Ultra Heat GMV-V72W/A-F, Service Manual, Page: 99 / 240

Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION
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Code Display status code Display status Code Display status
08_Confirm
debugging startup
db Light 08 Light AP Blink
If it’s confirmed, press SW4 confirmation button. And if AE has been chosen in step 12, unit will
display as below and start next progress. (Of course, if AL has been chosen in step 12, LED3 will display
AL and start next progress.)
——
Debugging code Progress code Status code
progress
LED1 LED2 LED3
Code Display status code Display status Code Display status
08_Confirm
debugging startup
db Light 08 Light AE Light
Step 14: after unit is confirmed to start debugging, system select cooling/heating mode according to
ambient temperature.
A If cooling mode is selected, relevant display is as below:
——
Debugging code Progress code Status code
Meaning
progress
LED1 LED2 LED3
Code
Display
status
code
Display
status
Code
Display
status
09_Cooling
debugging
db Light 09 Light UC Light
Debugging is enabled in cooling mode
(debugging mode, auto-selected by
system).
db Light 09 Light
Error
code
Light
ODU Error occurs during debugging in
cooling mode.
db Light 09 Light XXXX/d5 Light
System detects error in indoor pipeline.
XXXX is IP of the faulted IDU. 3s later,
error code d5 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.
B If heating mode is selected, relevant display is as below:
——
Debugging code Progress code Status code
Meaning
progress
LED1 LED2 LED3
Code
Display
status
code
Display
status
Code
Display
status
10_Heating
debugging
db Light 09 Light UH Light
Debugging is enabled in heating mode
(debugging mode, auto-selected by
system).
db Light 09 Light
Error
code
Light
ODU Error occurs during debugging in
heating mode.
db Light 09 Light XXXX/d5 Light
System detects error in indoor pipeline.
XXXX is IP of the faulted IDU. 3s later,
error code d5 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.
Step 15: if there’s no error during operation for about 30min, system will automatically confirm that
debugging is finished and then stop. After debugging is finished, some functions can be set up according
to project’s actual needs. For specific details, please refer to System Functions Setup. If no special
requirements, skip this step.