23
LED Display Status
Explanation
Illuminated
Communication is normal
Extinguish
Communication module is disconnected
Illuminated
Inverter is in grid-connected power
generation status
Flashes at 1 second interval
Inverter is waiting for on-grid or in the
started state
Illuminated
Inverter fault
Flashes quickly at 0.2 seconds
interval
Grid fault
Flashes slowly at 1 second
interval
PV input fault
Note: If both the green LED indicator and the red LED indicator are flashing at the same
time, it indicates that a program upgrade is in progress. Do not perform any operation
before the program upgrade is completed.
7.4 Auto test function
（
For Italy
）
There is only the Italian grid connection regulation requires the inverter to have a function of auto
test, the follow section of 27.S1(0.85Under Voltage) is a sample introduced on how to do the
inverter auto test.
Auto test procedures
：
1.
Install the program of sunny bee in the computer.
2.
Connect the inverter communication interface of COM1 via transferring USB to RS-485 with
computer.
3.
Closed DC side circuit breaker and AC side circuit breaker.
Start program of sunny bee, test function of auto test as following picture.
