Gree GMV6 DC Inverter VRF Units Service Manual
19
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
02_allocate
addresses
db
ON
02
ON
Ad
Flash
The system is conducting the address
assignment.
db
ON
02
ON
OC
ON
Address assignment is succeeded. It will
automatically enter into the next step.
03_module
quantity
confirmation
db
ON
03
ON
01~04
Flash
LED3 displays the module quantity. It needs to
manually confirm the module quantity.
db
ON
03
ON
OC
ON
Once the system module quantity is confirmed,
it will automatically enter into the next step for
judgment.
04_indoor
unit’s quantity
confirmation
db
ON
04
ON
××/ The
quantity
of online
indoor
units
Flash
LED3 displays the quantity of online indoor
units.
db
ON
04
ON
OC
ON
Indoor unit’s quantity inspection is finished.
Enter into the next step automatically.
05_
detect
internal
communicatio
n
db
ON
05
ON
C2
ON
The system has detected “communication
malfunction between main control and inverter
compressor driver”.
db
ON
05
ON
C3
ON
The system has detected “communication
malfunction between main control and inverter
fan driver”.
db
ON
05
ON
CH
ON
Indoor/outdoor unit’s “rated capacity ratio is too
high”.
db
ON
05
ON
CL
ON
Indoor/outdoor unit’s “rated capacity ratio is too
low”.
db
ON
05
ON
OC
ON
System inspection is finished. Enter into the
next step automatically.
06_
outdoor
unit’s internal
components
confirmation
db
ON
06
ON
correspod
ing error
code
ON
The system has detected the fault of outdoor
unit’ components.
db
ON
06
ON
OC
ON
The system detected that there’s no outdoor
unit fault. Enter into the next step
automatically.
07_indoor unit
componets
inspection
db
ON
07
ON
XXXX/cor
respoding
error
code
ON
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.
db
ON
07
ON
OC
ON
The system detected that there’s no outdoor
unit fault. Enter into the next step
automatically.
08_compress
or reheat
comfirmation
db
ON
08
ON
U0
ON
Preheat time for compressor is insufficient.
db
ON
08
ON
OC
ON
Preheat time for compressor is enough. Enter
into the next step automatically.
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.