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Froniuis displaySTATE 520

STATE 520

No feed-in within the last 24 hours from MPPT1

Behaviors

Warning message is shown 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 520 applies to:

Symo

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).
  • 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

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