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Step 6: Wait. Unit will then start progress 01 and 02; in progress 01, if master unit is not correctly
set, progress 01 will show the following errors:
——
Debugging Code
LED1
Progress
Code
Display status Code Display status Code Display status
db
01_01 Set
up master
db
unit:
db
According to the above errors, reset the master unit as instructed in Master Unit Setup
SA8_MASTER_S. After reset is finished, start debugging again.
In progress 02, if master IDU is not detected, then progress 02 will show the following errors:
LED1
Function code
Display mode
db
At this time, all buttons are ineffective. Set master IDU in 1min via debugging software. If master
IDU is not set in 1min, system will set up a master IDU randomly. After that, system will start next
progress.
Step 7: in progress 03, the quantity of modules needs to be confirmed manually. Main board of
each module will display:
——
Progress
Code
03_Quantity of
modules
If the quantity displayed is the same with actual quantity, then press SW7 confirmation button on
the master unit to confirm it. Unit will start next progress:
——
Progress
Code
03_Confirm the
quantity of
modules
If the quantity displayed is different from actual quantity, then disconnect power and check
whether communication wire among each module is correctly connected. After the check, start
debugging again.
Step 8: in progress 04, the quantity of IDUs needs to be confirmed manually. Main board of each
module will display:
——
Progress
Code
04_Confirm the
quantity of IDUs
Progress Code
LED2
Light
01
Light
01
Light
01
Current progress
Light
02
Debugging code
LED1
Display status
db
Light
Debugging code
LED1
Display status
db
Light
Debugging code
LED1
Display status
db
Light
Status Code
LED3
Light
CC
Light
Light
CF
Light
Light
OC
Light
LED2
Display mode
Light
Progress code
LED2
Code
Display status
03
Light
Progress code
LED2
Code
Display status
03
Light
Progress code
LED2
Code
Display status
04
Light
43
GMV DC Inverter VRF
Meaning
System doesn't have master
unit. Reset master unit.
More than 2 master units are
set. Reset master unit.
Master unit is successfully set.
Start next progress.
LED3
Current status
Display mode
L7
Blink
Status code
LED3
Code
Display status
Quantity of
Blink
modules
Status code
LED3
Code
Display status
OC
Light
Status code
LED3
Code
Display status
Quantity of
connected
Blink
IDUs
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