Gree GMVVQ224WM/C-X - Page 62

GMV Heat Recovery DC Inverter VRF
58
Instruction for each stage progress at the time of debugging
—
Debugging code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
09_refrigerant
judge before
startup
db ON 09 ON U4 ON
The system refrigerant is insufficient.
Please charge the refrigerant until the
fault is eliminated.
db ON 09 ON OC ON
The system refrigerant judge is normal.
Enter into the next step automatically.
10_ status
judgment of
main pipeline
before
starting
db
ON
10
ON
ON
ON
Starting up the operation
db
ON
10
ON
U6
ON
Main pipeline status is abnormal
db ON 10 ON OC ON Main pipeline status is normal
11_ reserved
function
db ON 11 ON AE ON
—
12_ reserved
function
db ON 12 ON 01 ON
—
13~15_ pilot
run stage
db ON
13/14
/15
ON AC ON Test run under heating mode
db ON
13/14
/15
ON AH ON Test run under cooling mode
db ON
13/14
/15
ON
corresponding
error code
ON
There is fault in the pilot run stage.
Note: fault module display
db ON
13/14
/15
ON J0 ON
There is fault in the pilot run stage.
Note: non-fault module display
db ON
13/14
/15
ON XXXX/U8 ON
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.
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
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 conducted the
debugging and the unit is under standby
status.
LED1 displays module address; LED2
and LED3 displays
“
OF
”
.