
STATE 581
SPUI - Special Purpose Utility-Interactive is activated
The inverter is no longer compatible with standards IEEE1547 and IEEE1574.1 because the islanding function is deactivated, frequency-dependent power reduction is activated, and the frequency and voltage limits are being changed

galvo

primo

symo
Expected Behaviors
- The inverter is displaying a STATE 581 message indicating a warning. It typically continues operating, but other errors may also be present. Press ENTER on the inverter to acknowledge the message and check the menu for additional status codes.
State Class
A state class is a generalized description of errors, catagorized by the number the STATE code starts with.
These messages typically do not stop the inverter from feeding energy into the grid. They are usually informational, such as logging problems, low-priority hardware faults, or maintenance notices. The inverter continues operating normally, though performance may be limited in some cases. Users can acknowledge the message by pressing the ENTER button. If the warning persists or if there are other symptoms, the system should be checked by a qualified technician.
- The inverter is actively monitoring system conditions. No user intervention is required, and the inverter will automatically return to normal operation once conditions stabilize.
If the message appears frequently or does not clear on its own, contact a Fronius Service Provider to inspect the system.
Tips for Qualified Persons
The following procedures involve safety risks and potential for equipment damage. They are intended only for qualified personnel trained to identify and avoid the hazards that exist, and possess the appropriate PPE. These are general tips to aid professionals in troubleshooting, not instructions or directives to perform them.
We assume no liability for injury or damage resulting from their use.
- Verify that the country code is correctly configured in the hidden service menu (press third button 5 times) using code 73887. For gen24 models, check and configure the country code using the Fronius Solar.start app. Even when the country code is set correctly, rerunning the country code setup can help correct corrupt data.

Fronius inverters in the U.S. typically come with a standard 10-year warranty. Starting in 2024, registering the inverter on the Fronius Solar.web website (the Fronius solar monitoring platform), extended the warranty by an additional 2 years, totaling 12 years of coverage, and updates the warranty start date to the actual installation date. Fronius has also offered warranty extensions of up to 20 years.
The inverter label, typically located on the bottom of the unit, lists the device serial number. To check if your inverter is still covered, call Fronius Technical Support at 1-877-Fro-nius (1-877-376-6487)
Founded in 1945 by Günter Fronius in Pettenbach, Austria, Fronius began as a repair shop for radios and electrical equipment. Recognizing the need for efficient battery charging, Günter developed a device to recharge car batteries, marking the company's first foray into energy solutions.


The best point of contact is your original installer
If the orginal installer is no longer available, contact a local Fronius Service Provider in your area.
Fronius Technical Support can also be reached at 1-877-Fro-nius (1-877-376-6487)
DENVER RESIDENTS: Is your system located in the Denver, CO metro area? CONTACT US
Comment
Informational only, press enter to confirm. Choose different country setup if incorrect.