Gree GMVVQ224WM/C-X Owner's Manual page 61

GMV Heat Recovery DC Inverter VRF
Debugging code Progress code
—
LED1
Progress
Code
db
03_module
quantity
confirmation
db
db
04_indoor
unit quantity
confirmation
db
db
db
05_ detect
internal
communication
db
db
db
db
06_outdoor
unit
components
db
inspection
db
07_indoor
unit
components
inspection
db
db
08_compress
or preheat
confirmation
db
Instruction for each stage progress at the time of debugging
LED2
Display Display
Code
status status
ON 03 ON
ON 03 ON
ON 04 ON
ON 04 ON
ON 05 ON
ON 05 ON
ON 05 ON
ON 05 ON
ON 05 ON
ON 06 ON
ON 06 ON
ON 07 ON
ON 07 ON
ON 08 ON
ON 08 ON
Status code
LED3
Display
Code
status
01~04 Flash
OC ON
××/ The
quantity of
Flash
online indoor
units
OC ON
C2 ON
C3 ON
CH ON
CL ON
OC ON
corresponding
ON
error code
OC ON
XXXX/
corresponding ON
error code
OC ON
U0 ON
OC ON
57
Meaning
LED3 displays the module quantity. It
needs to manually confirm the module
quantity.
Once the system module quantity is
confirmed, it will automatically enter
into the next step for judgment.
LED3 displays the quantity of online
indoor units.
Indoor unit's quantity inspection is
finished. Enter into the next step
automatically.
The system has detected
"communication malfunction between
main control and inverter compressor
driver".
The system has detected
"communication malfunction between
main control and inverter fan driver".
Indoor/outdoor unit's "rated capacity
ratio is too high."
Indoor/outdoor unit's "rated capacity
ratio is too low".
System inspection is finished. Enter
into the next step automatically.
The system has detected the fault of
outdoor unit' components.
The system detected that there's no
outdoor unit fault. Enter into the next
step automatically.
The system detected an indoor unit
fault. XXXX indicates engineering
number of fault indoor unit, and the
corresponding fault code is displayed
2s later. For example, if there is D5
fault in the No. 100 indoor unit, LED3
displays as follows: 01 (after 2s) 00
(after 2s) d5, and they will be displayed
circularly.
The system detected that there's no
outdoor unit fault. Enter into the next
step automatically.
Preheat time for compressor is
insufficient.
Preheat time for compressor is
enough. Enter into the next step
automatically.