Gree GMV-280WL/C-X - Page 75

GREE DC Inverter Multi VRF System II Service Manual
71
Stage process instruction for debugging
——
Debugging code
Process code
Status code
Code instruction and operation method
Process
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
db
ON
04
ON
OC
ON
Confiration for the quantity of indoor unit of
finished. 2s later, it will enter into the next step
automatically.
05_I
nternal communication and capacity ratio inspection for
between indoor unit and outdoor unit
db
ON
05
ON
C2
ON
Communication between main board of outdoor
unit and drive is abnormal. Please check whether
the communication wire connecting main board of
outdoor unit and drive board is normal? It will enter
into the next operation after troubleshooting. If it
needs to cut off the power during troubleshooting
process, start the debugging from step 01 after
energization.
db
ON
05
ON
OC
ON
Normal communication between main board of
outdoor unit and drive. It will displays for 2s by the
left method. With this 2s, the capacity ratio for
indoor unit and outdoor unit will be detected
automatically. If it hasn’t exceeded the capacity
ratio range, it will enter into n
ext step
determination after 2s; if it has exceed the
capactiry ration, display is as below:
db
ON
05
ON
CH
ON
The rated capacity ratio for indoor unit is high.
Change the combination for indoor unit and
outdoor unit to let their capacity ration is within the
reasonable range. Perfrom the debugging again
from step 01.
db
ON
05
ON
CL
ON
The rated capacity ratio for indoor unit is low.
Change the combination for indoor unit and
outdoor unit to let their capacity ration is within the
reasonable range. Perfrom the debugging again
from step 01.
06_Parts detection for
outdoor unit
db
ON
06
ON
Corre
spond
ing
error
code
ON
Malfunction of parts for outdoor unit. LED3
displays corresponding malfunction code. After
troubleshooting, it will enter into the next step
determination automatically. If it needs to cut off
the power for the outdoor unit during
troubleshooting process, perform the debugging
again from step 01 after energization.
db
ON
06
ON
OC
ON
When there’s no malfunction of parts for outdoor
unit, it will enter into the next step determination
automatically after 10s.
07_Parts detection for indoor unit
db
ON
07
ON
XXXX
/corre
spond
ing
error
code
ON
The system detected that there’s malfunction for
the parts of indoor unit. XXXX indicates the
engineering series code for the indoor unit with
malfunction. 3s later, corresponding malfunction
code will be displayed. Eg: When there is
malfunction d5 and d6 for no. 1 indoor unit, and
malfunction d6 and d7 for no. 792 indoor unit,
LED3 nixie tube will display 00, 01, d5, d6, 07, 92,
d6, d7 cyclely evey 2s. After troubleshooting, it will
enter into the next step determination
automatically. If it needs to cut off power for
outdoor unit during troubleshooting process,
perform the debugging again from step 01 after
energization.
db
ON
07
ON
OC
ON
No parts malfunction for indoor unit. 2s later, it will
enter into the next determination automatically.
Prehea
t
confirm
ation
for
db
ON
08
ON
UO
ON
Preheat time for compressor is not reached to 8h.
Indicator will display as shown by the left method
until the reheat time for compressor is reached to
8h. or short press SW7 button on main board to