
STATE 731
Initialization error, USB flash drive is not supported
Behaviors
Warning message on the display
Status Code Class 7
Class 7 status codes (state codes that start with a seven, i.e., 7xx), relate to the control system, the configuration, and/or inverter data recording. They may directly or indirectly affect the process of feeding energy into the grid.
STATE 731 applies to:

Primo

Galvo

Symo
Solutions for this Error
Remedies
- Check or replace USB flash drive
- Check the USB flash drive file system (FAT32)
- Remove Read/Write protection
- Use another USB flash drive
- Run latest firmware update
Get Help with this Error:
The best point of contact is your original installer
If the orginal installer is no longer available, contact a local Fronius Service Provider
DENVER RESIDENTS: Is your system located in the Denver, CO metro area? CONTACT US