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State 560 — External Shutdown / Ripple Control Signal

Fronius Solar Inverter

Severity:

Source: OnlyErrorCodes.com — Every error code. One place.

Fronius Inverter State 560 — What It Means & Fix

What Does This Error Mean?

Fronius State 560 means the inverter received an external shutdown signal — either from a ripple control receiver (utility load management) or a connected shutdown relay. This is a deliberate shutdown by your electricity network operator or an external device, not an inverter fault.

Affected Models

  • Fronius Primo
  • Fronius Symo
  • Fronius Galvo
  • Fronius IG Plus
  • All Fronius inverters with external input terminal

Common Causes

  • Ripple control signal from the electricity network operator reducing solar export during peak periods — common in Australia, New Zealand, South Africa, and parts of Europe
  • External shutdown relay triggered — a relay wired to the Fronius external input terminal has opened
  • Remote off command sent via Fronius Solarweb or a third-party energy management system
  • Smart meter or export limiting device sending a shutdown command
  • Wiring fault on the Fronius external input terminal causing a false shutdown signal

How to Fix It

  1. Understand what is sending the shutdown signal.

    Fronius State 560 requires an active signal on the inverter's external input terminal — the inverter does not shut itself down with this code. Determine what is connected to the external input: a ripple control receiver, an energy management relay, or a smart meter with export control. Once the signal is removed, the Fronius will restart automatically.

  2. Check your electricity plan for ripple control.

    In Australia, New Zealand, South Africa, and some European countries, electricity distributors use ripple control signals to curtail solar export during periods of grid oversupply. If you are on a feed-in tariff plan with export management conditions, State 560 during midday is normal and expected. Contact your electricity retailer to understand the export control rules on your plan.

  3. Check the Fronius external input terminal wiring.

    The Fronius external input terminal (labeled EXT or I/O on the inverter) triggers State 560 when the circuit is opened. If nothing should be connected to this terminal, check that the wiring has not been accidentally disturbed — a disconnected wire will cause a permanent false shutdown. If the terminal is meant to be unused, confirm the factory shorting jumper is in place (consult the Fronius installation manual).

  4. Check Solarweb for remote shutdown settings.

    Log in to solarweb.com and go to your system settings. Check if a remote shutdown has been configured or if an energy management profile is set to reduce output during certain hours. A Smart Meter connected via Fronius Solarweb can also send export limiting commands that result in State 560.

  5. Verify production resumes after the signal clears.

    State 560 resolves automatically when the external shutdown signal is removed. After a ripple control event ends (typically 30–120 minutes), the Fronius will return to normal operation without any action needed. Check the Solarweb event log the next day to see the duration of the State 560 shutdown and confirm the inverter resumed correctly.

When to Call a Professional

If State 560 appears at unexpected times (not during known ripple control windows) and there is no external relay wired to the inverter, the external input terminal wiring should be inspected by a licensed electrician.