Gree GMV-280WM/E-X - Debugging Progress and Status Code Interpretation

GMV DC Inverter VRF
51
Description of each stage of debugging progress
——
Debugging
code
Progress code
Status code
Meaning
progress
LED1
LED2
LED3
Code
Display
status
code
Display
status
Code
Display
status
02_Allocate
addresses
db
light
02
light
Ad
blink
System is allocating addresses.
db
light
02
light
L7
blink
Master IDU is not set. Please set
master IDU. If it’s not set in 1min,
system will set the master IDU
randomly.
db
light
02
light
OC
light
Allocation is finished. Start next
progress.
03_Confirm the
quantity of
modules
db
light
03
light
01~04
blink
LED3 displays the quantity of modules.
Confirm the number manually.
db
light
03
light
OC
light
System has confirmed the quantity of
modules. Start next progress.
04_Confirm the
quantity of IDUs
db
light
04
light
01~80
blink
LED3 displays the quantity of IDUs.
Confirm the number manually.
db
light
04
light
OC
light
System has confirmed the quantity of
IDUs. Start next progress.
05_Detect
internal
communication
db
light
05
light
C2
light
System detects “driven communication
error between master unit and inverter
compressor”.
db
light
05
light
C3
light
System detects “driven communication
error between master unit and inverter
fan”.
db
light
05
light
CH
light
IDU/ODU “high proportion of rated
capacity”.
db
light
05
light
CL
light
IDU/ODU “low proportion of rated
capacity”.
db
light
05
light
OC
light
Detection is finished. Start next
progress.
06_Detect
outdoor
components
db
light
06
light
Error code
light
System detects error in outdoor
components.
db
light
06
light
OC
light
No error in outdoor components. Start
next progress.
07_Detect
indoor
components
db
light
07
light
XXXX/Error
code
light
System detects error in indoor
components. XXXX is the project no. of
the faulted IDU. 3s later, relevant error
code is displayed. For example, IDU
no. 100 has d5 error, then LED3
displays like this: 01 (2s later) 00 (2s
later) d5, and repeat again.
db
light
07
light
OC
light
No error in indoor components. Start
next progress.
08_Confirm
preheated
compressor
db
light
08
light
U0
light
Preheat time for compressor is less
than 8h.
db
light
08
light
OC
light
Preheat time for compressor is 8h.
Start next progress.
09_Refrigerant
judgments
before startup
db
light
09
light
U4
light
System refrigerant is not enough.
System downtime equilibrium pressure
is lower than 0.3MPa.
db
light
09
light
OC
light
System refrigerant is normal. Start next
progress.