Gree GMV-H224WL/A-X Manuel D'utilisateur page 29

5.2.2 Test Operation and Debugging
Description of test operation procedures and main board display of ODU
—— Debugging code
Progress
Code
db
01_
Set master
db
unit
db
02_
Allocate db
addresses
db
03_
db
Confirm
the
quantity of db
ODU
04_
db
Confirm
the
quantity of
IDU
db
db
05_ Detect
ODU's
internal db
communic
ation and
capacity
ratio
db
db
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Description of each stage of debugging progress
Progress code
LED1 LED2
Display Display
Code
status status
On 01 On
On 01 On
On 02 On
On 02 On
On 02 On
On 03 On
On 03 On
On 04 On
On 04 On
On 05 On
On 05 On
On 05 On
On 05 On
DC Inverter Multi VRF System
Status code
LED3
Code meaning and operation method
Display
Code
status
AO On System is not debugged.
Hold main board's SW7 button for 5s
to start debugging. Main board will
OC On
display as said in the left. 2s later, next
step starts.
System is allocating addresses. 10s later,
Ad Blink
display as below:
No master indoor unit. Display will be on
for 1min, during which master IDU can be
L7 Blink set manually. If not, system will set the
unit with minimum IP address as the
master IDU.
Allocation is finished. 2s later, next step
OC On
starts.
System is confirming. 1s later, next step
01 Blink
starts.
System finishes confirmation. 2s later,
OC On
next step starts.
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
01~8
Blink IDU is correctly connected. After the
0
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:
System has confirmed the quantity. 2s
OC On
later, next step starts.
Communication between master ODU
and driver has error. Check the
communication connection of ODU's
main board and drive board. When the
C2 On
error is eliminated, start next step. If
power is off during troubleshooting, then
restart debugging from progress 01 after
power is on.
Communication of master ODU and
driver is normal. Unit will display as in the
left for 2s and detect the capacity ratio of
OC On IDU and ODU. If the ratio is within range,
than next step will start 2s later. If the
ratio is out of range, unit will display as
below:
Rated capacity ratio of IDU is too high.
Change the combination way of IDU
CH On
and ODU to make the ratio within
range. And restart debugging from
progress 01.
Rated capacity ratio of IDU is too low.
Change the combination way of IDU
CL On
and ODU to make the ratio within
range. And restart debugging from
progress 01.
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