Status Diagnosis and Troubleshooting
Displaying status
codes
Your inverter is equipped with system self diagnosis that automatically identifies
a large number of possible operation issues by itself and displays them on the
screen. This enables you to know immediately if there are any malfunctions in the
inverter or the photovoltaic system or any installation or operating errors.
Whenever the system self diagnosis has identified a particular issue, the respect-
ive status code is shown on the screen.
IMPORTANT! Status codes may sometimes appear briefly as a result of the con-
trol response from the inverter. If it subsequently continues to operate normally,
there has not been a system error.
Total Failure of
the Display
If the display remains dark for a long time after sunrise:
-
Check the AC voltage at the inverter's connections:
the AC voltage must be 208/220/240/440/480 V (+10%/-12%) depending on
the grid.
Status codes in
the e-Manual
The latest status codes can be found in the e-Manual version of these Operating
Instructions:https://manuals.fronius.com/html/4204102124/
#0_t_0000000061
manuals.fronius.com/htm-
l/4204102124/#0_t_0000
000061
STATE CODES
Fronius Symo UL
Customer ser-
vice
IMPORTANT! Please contact your Fronius dealer or a Fronius-trained service
technician if:
-
An error appears frequently or for a long period of time
-
An error appears that is not listed in the tables
Operation in
dusty environ-
ments
When operating the inverter in extremely dusty environments:
when necessary, clean the cooling elements and fan on the back of the inverter
and the supply air openings in the mounting bracket using clean compressed air.
49
EN-US
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