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
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.
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.
