Gree GMVVQ224WM/C-X Owner's Manual page 62

Debugging code Progress code
—
LED1
Progress
Code
db
09_refrigerant
judge before
startup
db
10_ status
db
judgment of
db
main pipeline
before
db
starting
11_ reserved
db
function
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
Instruction for each stage progress at the time of debugging
LED2
Display Display
Code
status status
ON 09 ON
ON 09 ON
ON 10 ON
ON 10 ON
ON 10 ON
ON 11 ON
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
GMV Heat Recovery DC Inverter VRF
Status code
LED3
Display
Code
status
U4 ON
OC ON
ON ON
U6 ON
OC ON
AE ON
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
OF ON
status. LED1 displays module address; LED2
and LED3 displays "OF".
58
Meaning
The system refrigerant is insufficient.
Please charge the refrigerant until the
fault is eliminated.
The system refrigerant judge is normal.
Enter into the next step automatically.
Starting up the operation
Main pipeline status is abnormal
Main pipeline status is normal
—
—
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