Gree GMV-36WL/A-T(U) - Page 88

DC Inverter Side Discharge VRF Ⅱ for North America
86
8.2 Debugging of unit
Debugging procedure for test run, display instruction for indicator on main board of
outdoor unit and operation method are as below:
Description of each stage of debugging progress
——
Debugging
code
Progress code
Status code
Code meaning and
operation method
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
01_ Set master
unit
db
On
01
On
AO
On
System is not debugged.
db
On
01
On
OC
On
Hold main board’s SW7
button for 5s to start
debugging. Main board will
display as said in the left. 2s
later, next step starts.
02_ Allocate
addresses
db
On
02
On
Ad
Blink
System is allocating
addresses. 10s later, display
as below:
db
On
02
On
L7
Blink
No master indoor unit.
Display will be on for 1min,
during which master IDU can
be set manually. If not,
system will set the unit with
minimum IP address as the
master IDU.
db
On
02
On
OC
On
Allocation is finished. 2s
later, next step starts.
03_ Confirm
the quantity of
ODU
db
On
03
On
01
Blink
System is confirming. 1s
later, next step starts.
db
On
03
On
OC
On
System finishes
confirmation. 2s later, next
step starts.
04_ Confirm
the quantity of
IDU
db
On
04
On
01~80
Blink
LED3 displays the quantity
of indoor unit. Confirm the
number manually. If the
number is not consistent
the display one, cut off
power of IDU and ODU and
check whether
communication wire of
IDU is correctly
connected. After the check,
connect power and start
debugging from progress 01.
If the number is then
correct, press main
board’s SW7 button to
confirm. Then the display is
as below:
db
On
04
On
OC
On
System has confirmed the
quantity. 2s later, next step
starts.