Gree GMV-784WM/H-X - Maintenance Procedures; Seasonal Usage Precautions; Parts Replacement Information

GMV DC Inverter VRF
63
——
Debugging code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
13~15_pilot run stage
db ON
13/14/
15
ON AC ON Pilot run of cooling mode
db ON
13/14/
15
ON AH ON Pilot run of heating mode
db ON
13/14/
15
ON
Corresp
onding
error
code
ON
There's fault on pilot run stage.
Note: fault module display
db ON
13/14/
15
ON J0 ON
There's fault on pilot run stage.
Note: non-fault module display
db ON
13/14/
15
ON U9 ON
Outdoor unit's pipeline or valve is
abnormal.
db ON
13/14/
15
ON
XXXX/
U8
ON
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.
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
Progress code
Status code
Meaning
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
01~04 ON OF ON OF ON
The complete unit has finished the
debugging and it stays at standby
status. LED1 displays module
address; LED2 and LED3 displays
“OF”.
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.