Gree GMV-VQ280WM/C-X Owner's Manual page 63

GMV Heat Recovery DC Inverter VRF
— Debugging code Progress code
LED1
Progress
Display
Code
12_ reserved
db
function
db
db
db
db
13~15_ pilot
run stage
db
Note: In the pilot run stage, the unit will display corresponding procedures according to actual
circumstances.
When master module displays as below, the complete unit has conducted the debugging and it
stays at the standby status.
Debugging code
LED1
Display
Code
status
01~04 ON
4.3 Basic Introduction for Engineering Debugging
4.3.1 Debugging Method
DC inverter multi VRF unit has three debugging methods at present:
(1) Conduct it by pressing the buttons on the main board of outdoor unit.
(2) Install proprietary software to conduct the debugging through PC. Indoor and outdoor units'
parameters displayed simultaneously through PC software.
(3) Use multi-functional debugger.
NOTE: As for the detailed operation method for debugging, please refer to corresponding instruction
manual.
Instruction for each stage progress at the time of debugging
LED2
Display
Code
status status
ON 12 ON
13/14
ON ON
/15
13/14
ON ON
/15
13/14
ON ON
/15
13/14
ON ON
/15
13/14
ON ON
/15
Progress code
LED2
Display
Code
status
OF ON
Status code
LED3
Display
Code
status
01 ON
AC ON
AH ON
corresponding
ON
error code
J0 ON
XXXX/U8 ON
Status code
LED3
Display
Code
status
The complete unit has conducted the
debugging and the unit is under standby status.
OF ON
LED1 displays module address; LED2 and
LED3 displays "OF".
59
Meaning
—
Test run under heating mode
Test run under cooling mode
There is fault in the pilot run stage.
Note: fault module display
There is fault in the pilot run stage.
Note: non-fault module display
The system detected the indoor unit's
pipeline is abnormal. XXXX indicates
the engineering number of fault indoor
unit. Error code U8 is displayed after
2s. For example, if the U8 fault occurs
in the No. 100 indoor unit, LED3
displays as follows: 01 (after 2s) 00
(after 2s) U8, and they will be displayed
circularly.
Meaning