Fronius IG-TL 3.0, Operating Instructions Manual

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97
Status Diagnosis and Troubleshooting
Displaying Sta-
tus Codes Your inverter is equipped with a self diagnostic system that automatically identifies a large
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.
Total failure of the
display If the display remains dark for a long time after sunrise:
-
Check the open circuit voltage of the solar modules at the inverter's connections:
Open circuit voltage < 350 V... Error in the photovoltaic system
Open circuit voltage > 350 V... may indicate a basic fault in the inverter. In this case,
notify a Fronius-trained service technician.
- Check the AC voltage at the inverter's connections:
the AC voltage must be 230 V (+ 10 % / - 15 %)*.
* The grid voltage tolerance depends on the country setup.
Class 1 status
codes Status codes in class 1 are typically temporary. Their cause lies in the grid.
Your inverter's first reaction is to disconnect from the grid. Then, the grid will be checked
for the duration of the observation period stipulated. If, after the end of this period, no fur-
ther defect is identified, your inverter resumes operating and feeding power into the grid.
The GPIS soft start function is activated depending on the country setup:
according to the VDE-AR-N 4105 guideline, the output of the inverter increases continu-
ously every minute by 10% after a shutdown due to an AC error.
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.
102
AC voltage too high
Description Grid conditions are thoroughly tested, and as soon as they are
again within the permissible range, the inverter will resume
feeding power into the grid.
Remedy Check grid connections.
If this status code keeps recurring, contact your system install-
er.
103
AC voltage too low