Fronius Fronius IG Plus 100, Operating Instructions Manual

Page: 121 / 157

113
Status Diagnosis and Troubleshooting
The Fronius IG Plus is able to perform a system self diagnostic that auto-
matically detects many errors that may occur and shows them on the
display. This enables you to know immediately if there are any malfunc-
tions in the Fronius IG Plus, the photovoltaic system or any installation or
operating errors.
When the system self diagnostics detects a specific fault, the associated
status message will appear on the display.
Important Status messages may sometimes appear briefly as a result of
the control response from the Fronius IG Plus. If the Fronius IG Plus
continues to operate without any sign of a problem, this means that there
was no error.
Display of
Status Mes-
sages
General Status
Messages
The open-circuit voltage of the
solar modules is too low.
If the open-circuit voltage of the solar modules increases to over 290 V,
the Fronius IG Plus will start synchronizing with the grid (display ‘SYN-
CAC’).
After a short wait, the Fronius IG Plus will resume grid synchronization
(display: ‘SYNCAC’).
Power at the solar modules is too
low
If the display remains dark for a longer time after sunrise:
-
Check the open-circuit voltage of the solar modules at the connec-
tions of the Fronius IG Plus:
Open-circuit voltage < 290 V ... error in the other photovoltaic system
Open-circuit voltage > 290 V ... may indicate a basic fault in the Froni-
us IG Plus. In this case, notify a Fronius-trained service technician.
Total failure