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Status Diagnosis and Troubleshooting
Displaying Sta-
Your inverter is equipped with a self diagnostic system that automatically identifies a large
tus Codes
number of possible operation issues by itself and displays them on the screen. This en-
ables you to know immediately if there are any malfunctions in the inverter, the photovoltaic
system or any installation or operating errors.
Whenever the self diagnostic system has identified a particular issue, the respective status
code is shown on the screen.
IMPORTANT! Status codes may sometimes appear briefly as a result of the control re-
sponse from the inverter. If it subsequently continues to operate normally, there has not
been a system error.
Normal Operation
Status Codes
As soon as the open circuit voltage exceeds 265 V, the inverter starts synchronizing with
the grid (display shows "SYNC AC").
After a short time the inverter resumes grid synchronization (display shows "SYNC AC").
Total Failure
If the display remains dark for a long time after sunrise:
-
Check the open circuit voltage of the solar modules at the connections of the inverter:
Open circuit voltage < 260 V ... error in the photovoltaic system
Open circuit voltage > 260 V ... may indicate a basic fault in the inverter. In this case,
notify a Fronius-trained service engineer.
The open circuit voltage of the solar mod-
ules is too low.
The total power output of the solar mod-
ules is insufficient.
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