47
EN
Class 7 status
codes
Class 7 status codes relate to the control system, the configuration and inverter data re-
cording, and may directly or indirectly affect the process of feeding energy into the grid.
Code Description Behaviour Remedy
668
Incorrect input signal on the
multifunction current interface
The inverter is not feeding any
energy into the grid.
The status code is displayed in
the case of an incorrect input
signal at the multifunction cur-
rent interface and with the fol-
lowing setting:
Basic menu / Input signal /
Mode of operation = Ext. Sig-
nal, triggering method = Ext.
Stop
Check the devices connected
to the multifunction current in-
terface;
if this status code keeps recur-
ring: notify a Fronius-trained
service engineer.
Code Description Behaviour Remedy
705
Conflict when setting the in-
verter number (e.g. number al-
ready assigned)
-
Correct the inverter number via
the Setup menu
721
EEPROM has been reinitial-
ised or EEPROM is faulty
Warning message is shown on
the display
Acknowledge status code;
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
731
Initialisation error - USB stick is
not supported
Warning message is shown on
the display
Check or replace USB stick
Check the file system on the
USB stick
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
732 Overcurrent on USB stick
733 No USB stick connected
Warning message is shown on
the display.
Connect or check USB stick
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
734
Update file not recognised or
not present
Warning message is shown on
the display
Check update file (e.g. for cor-
rect file name)
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
735
Update file does not match the
device, update file too old
Warning message appears on
the display, update process is
interrupted
Check update file
and if necessary organise an
update file to match the device
(e.g. at http://
www.fronius.com)
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
736 Write or read error occurred
Warning message is shown on
the display
Check USB stick and the data
contained on it or replace USB
stick
Never unplug a USB stick if the
'Data Transmission' LED is still
flashing or lit.
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
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