Gree GMV-224WM/G-X Owner's Manual page 63

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Progress
12_reserved function
Step 16: After the unit debugging method is confirmed, the system automatically selects cooling
or heating mode according to the ambient temperature.
Once cooling/heating mode is selected, the relevant display is as below.
Debugging
—
code
LED1
Progress
Display
Code
db
db
db
db
13~15_ pilot
db
run stage
db
Note: In the pilot run stage, the unit will display corresponding procedures according to actual
circumstances.
Once debugging is completed, resume the standby status and the display is as below:
Debugging code
LED1
Display
Code
status
01~04 ON
Once the debugging for the complete unit is finished, please set relevant functions for the unit
according to the actual functional requirements of the project. Refer to relative technical materials for
the detailed operation method. If there is no special requirement, skip this step directly.
When delivery it to the user for operation, explain the precautions to the user.
Debugging code Progress code
LED1
Display
Code Code
status
db ON 12
Progress code
LED2 LED3 LED1
Display
Code
status status
ON 13/14/15 ON
13/14/15
ON ON
13/14/15
ON ON
13/14/15
ON ON
13/14/15
ON ON
ON 13/14/15 ON
Progress code
LED2
Display
Code
status
OF ON
Status code
LED2 LED3
Display Cod Display
status e status
ON 01 ON
Status code
LED2 LED3
Display
Code
status
AC ON
AH ON
Corresponding
ON
error code
J0 ON
U9 ON
XXXX/U8 ON
Status code
LED3
Display
Code
status
OF ON
59
GMV DC Inverter VRF
Meaning
—
Meaning
Pilot run of cooling mode
Pilot run of heating mode
There's fault on pilot run stage.
Note: fault module display
There's fault on pilot run stage.
Note: non-fault module display
Outdoor unit's pipeline or valve is
abnormal.
The system detected the indoor unit's
pipeline is abnormal. XXXX indicates
engineering number of fault indoor unit.
2s later, U8 fault occurred for No. 100
indoor unit. LED3 will display as below:
01 (2s later) 00 (2s later) U8, and it will
display like that circularly.
Meaning
The complete unit has finished the
debugging and it stays at standby
status. LED1 displays module
address; LED2 and LED3 displays
"OF".