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- Synchronization with grid:
‘WAIT PS’ is displayed, the inverter 
icon flashes: the inverter is waiting for 
all power stage sets in the network to 
be on stand-by. This procedure takes 
place dependent on the DC voltage.
- Next, the display shows ‘SYNC AC,’ 
the grid icon flashes.
- Startup test:
Before the inverter starts feeding ener-
gy into the grid, the conditions of the 
grid are tested in detail in accordance 
with local regulations. The display 
shows ‘START UP.’
- Operation of feeding energy into the 
grid:
After selecting the grid and when the 
tests are concluded, the inverter starts 
feeding energy into the grid.
The display shows the present power 
feeding into the grid.
The Operating Status LED lights up 
green, and the inverter starts opera-
ting.
IMPORTANT! For more information about the startup phase, please see the chapter 'Op-
eration', section 'Product description Fronius IG' (Startup Phase, Test Procedure).