Gree GMV6 DC Inverter VRF Units Service Manual
20
Instruction for each stage progress at the time of debugging
—
Deubugging
code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
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
13/14/1
5
ON
AC
ON
Test run under heating mode.
db
ON
13/14/1
5
ON
AH
ON
Test run under cooling mode.
db
ON
13/14/1
5
ON
Correspo
nding
error
code
ON
There is fault in the pilot run stage.
Note: fault module display.
db
ON
13/14/1
5
ON
J0
ON
There is fault in the pilot run stage.
Note: non-fault module display.
db
ON
13/14/1
5
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”.
NOTE!
In commissioning status and before the above commissioning processes are completed, when the
SW1 up button and SW4 back button are pressed for over 5 seconds, the system enters
non-wired-controller commissioning mode, and no longer detects the communication status between the
wired controller and indoor units.