52
*) If status code persists: Contact a Fronius-trained service technician
**) Fault is corrected automatically. If this status code keeps recurring, contact your system
installer
Class 7 Status
Codes
Class 7 status codes concern the inverter control unit, configuration and data recording,
and can directly or indirectly affect grid feed operation.
607
RCMU fault
Inverter does not feed ener-
gy into the grid.
Reset the status code by
pressing the "Enter" key.
The inverter resumes
feeding energy into the
grid; if the status code
keeps recurring, check
the entire affected pho-
tovoltaic system for any
damage; **)
608
Function incompatibility (one or more PC
boards in the inverter are not compatible
with each other, e.g., after PC board re-
placement)
Inverter does not feed ener-
gy into the grid.
Update inverter firm-
ware; *)
Code
Description
Behavior
Remedy
Code
Description
Behavior
Remedy
701 -
716
Provides information about the
internal processor status
Warning message on the
display
*)
721
EEPROM was reinitialized
Warning message on the
display
Acknowledge status code; *)
722 -
730
Provides information about the
internal processor status
Warning message on the
display
*)
731
Initialization error - USB flash
drive is not supported
Warning message on the
display
Check or replace USB flash drive
Check the USB flash drive file
system; *)
732
Initialization error - over-cur-
rent at USB flash drive
733
No USB flash drive inserted
Warning message on the
display
Insert or check USB flash drive; *)
734
Update file is not detected or is
not available
Warning message on the
display
Check update file (e.g., for the
proper file name)
*)
735
The update file does not match
the device, the update file is
too old
Warning message is shown
on the display, update pro-
cess is canceled
Check update file;
if required, download the correct
update file for the device (e.g., at
http://www.fronius.com); *)
736
Write or read error occurred
Warning message on the
display
Check the USB flash drive and
the files on the USB flash drive or
replace the USB flash drive.
Remove the USB flash drive only
when the "Data Transfer" LED is
no longer flashing or lit.; *)
737
File could not be opened
Warning message on the
display
Remove and reinsert the USB
flash drive, check or replace the
USB flash drive
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