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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
db
quantity of IDUs
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
04_Confirm the
quantity of IDUs
Step 9: progress 05 is "Detect internal communication"
If no error is detected, system will display as below and then start next progress.
——
Debugging code
progress
Code
05_Detect internal
db
communication
If error is detected, system will stay at current progress. Error has to be solved manually. Below
are relevant errors:
——
Debugging code
LED1
progress
Code
db
05_Detect
db
internal
communication
db
db
Elimination methods of above errors can be found in Troubleshooting.
Debugging code
LED1
Display status
Light
Debugging code
LED1
Display status
db
Light
Progress code
LED1
LED2
Display
code
status
Light
05
Progress code
LED2
Display
Display
code
status
status
Light
05
Light
Light
05
Light
Light
05
Light
Light
05
Light
Progress code
LED2
Code
Display status
04
Light
Progress code
LED2
Code
Display status
04
Light
Status code
LED3
Display
Display
Code
status
status
Light
OC
Light
Status code
LED3
Display
Code
status
System detects "driven communication
C2
Light
error between master unit and inverter
compressor".
System detects "driven communication
C3
Light
error between master unit and inverter
fan".
IDU/ODU "high proportion of rated
CH
Light
capacity".
IDU/ODU "low proportion of rated
CL
Light
capacity".
44
Photovoltaic Multi VRF
Status code
LED3
Code
Display status
Quantity of
blink
connected IDUs
Status code
LED3
Code
Display status
OC
Light
Meaning
Detection is finished. Start
next progress.
Meaning
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