Fronius Class 7 State Error Codes

Fronius class 7 state errors are related to the control system, the configuration, and inverter data recording, and may directly or indirectly affect the process of feeding energy into the grid.

Code	Description	Behavior	Remedy
STATE 705	Conflict when setting the inverter number (e.g. number already assigned)	–	Correct the inverter number via the setup menu
STATE 721	EEPROM has been reinitialized or EEPROM is faulty	A warning message is shown on the display	Acknowledge STATE code; If the STATE code is displayed all the time contact your local Fronius Service Partner
STATE 731	Initialization error – USB stick is not supported		Check or replace the USB stick. Check the file system on the USB stick. If the STATE code is displayed all the time notify your local Fronius Service Partner.
STATE 732	Overcurrent on a USB stick
STATE 733	No USB stick connected		Connect or check the USB stick. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 734	Update file not recognized or not present		Check update file (e.g. for the correct file name). If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 735	Update file does not match the device, update file too old	A warning message appears on the display, the update process is interrupted.	Update the inverter firmware with the latest firmware here; if the STATE code is displayed all the time after the firmware update contacts your local Fronius Service Partner. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 736	Write or read error occurred	A warning message is shown on the display	Check the 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 STATE code is displayed all the contact your local Fronius Service Partner.
STATE 738	The log file cannot be saved (e.g. USB stick is write protected or full)t		Create storage space, remove the write protection, check or replace USB stick if necessary. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 743	An error occurred during the update process		Repeat the update process, check the USB stick. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 745	Update file corrupt	A warning message appears on the display, the update process is interrupted.	Redownload the with the latest firmware here. If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 751	Time lost	A warning message is shown on the display	Reset the time and date on the inverter. Check update file (e.g. for the correct file name). If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 752	Real Time Clock module communication error	A warning message is shown on the display
STATE 757	Hardware error in the Real Time Clock module	The error message is shown on the display; the inverter is not feeding any energy into the grid.	If STATE code is displayed all the time contact your local Fronius Service Partner.
STATE 758	Internal error: Real Time Clock module is in emergency mode	Time may be inaccurate or lost (feeding energy into the grid normal).
STATE 766	Emergency power de-rating has been activated	The error message is shown on the display.