Gree GMVVQ224WM/C-X Owner's Manual page 68

If inspection valve of the unit is normal, the display is as below. The unit will automatically enter
into the next step.
—
Progress
10_ status judgment of
main pipeline before
starting
Step 14: Unit debugging step 11 is "reserved function".
The main module display is as below. The unit automatically enters into the next step.
—
Progress
11_ reserved function
Step 15: Unit debugging step 12 is "reserved function".
The master module display is as below. Then the unit automatically enters into the next step.
—
Progress
12_reserved function
Step 16: After the unit debugging method is confirmed, the system automatically selects cooling
or heating mode according to the ambient temperature.
Once cooling/heating mode is selected, the relevant display is as below.
Debugging code
—
LED1
Progress
Code
13~15_pilot run
stage
Note: In the pilot run stage, the unit will display corresponding procedures according to actual
circumstances.
Debugging code Progress code
LED1
Display
Code Code
status
db ON 10
Debugging code Progress code
LED1
Display
Code Code
status
db ON 11
Debugging code Progress code
LED1
Display
Code Code
status
db ON 12
Progress code
LED2 LED3
Display
Code
status
13/14/
db ON
15
13/14/
db ON
15
13/14/
db ON
15
13/14/
db ON
15
13/14/
db ON
15
13/14/
db ON
15
GMV Heat Recovery DC Inverter VRF
Status code
LED2 LED3
Display Display
Code
status status
ON OC ON
Status code
LED2 LED3
Display Display
Code
status status
ON AE ON
Status code
LED2 LED3
Display Display
Code
status status
ON 01 ON
Status code
LED1 LED2 LED3
Display Display
Code
status status
ON AC ON
ON AH ON
Correspo
nding
ON ON
error
code
ON J0 ON
ON U9 ON
ON XXXX/U8 ON
64
Meaning
The main pipeline is turned on
normally
Meaning
—
Meaning
—
Meaning
Pilot run of cooling mode
Pilot run of heating mode
There's fault on pilot run stage.
Note: fault module display
There's fault on pilot run stage.
Note: non-fault module display
Outdoor unit's pipeline or valve is
abnormal.
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.