STATE 522STATE 522
DC low String 1
Behaviors
Warning message on the display
Status Code Class 5
Class 5 status codes (state codes that start with a five, i.e., 5xx), do not generally interfere with feeding energy into the grid, but can cause restrictions. These status codes are displayed until they are acknowledged by pressing a key, however the inverter continues to operate normally in the background.
STATE 522 applies to:
Primo
Symo
Solutions for this Error
Remedies
- Check DC cables at the inverter and ensure DC disconnects are in the ON position. Measure DC voltage, polarity, and isolation at the inverter clamps (Qualified Techs only).
- Check MPPT1 settings
- If this issue persists, the next steps include inspecting internal inverter components and their cabling by a trained Fronius Service Provider to further diagnose this specific issue. Defective components or the device itself may need to be replaced.
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
