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Fronius · PV inverters · Fronius Symo 3.0–20.0 (three-phase grid inverter, SnapINverter)

STATE 517Power derating caused by too high a temperature

Name in the manufacturer's documentation (service manual): Power derating caused by too high a temperature[1]

In plain words (editorial)

The inverter reduces its power because it is too hot (power derating) and shows a warning. The manual says to clear the cooling air openings and heat sink if necessary; the fault clears automatically.

When to call a service technician: If the code keeps recurring, contact your system installer.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Fronius Symo 3.0-3 – 20.0-3, Fronius Eco 25.0-3 – 27.0-3 – Operating Instructions (42,0410,2028, ed. 016-24082016) – distributor copy (42,0410,2028 (016-24082016)) , p. 49 manufacturer document – copy from a distributor quote verified 517 Power derating caused by too
  2. [2] Fronius Symo 3.0-3 – 20.0-3, Fronius Eco 25.0-3 – 27.0-3 – Operating Instructions (42,0410,2028, ed. 016-24082016) – distributor copy (42,0410,2028 (016-24082016)) , p. 49 manufacturer document – copy from a distributor quote verified If necessary, purge cooling air open
  3. [3] Fronius Symo 3.0-3 – 20.0-3, Fronius Eco 25.0-3 – 27.0-3 – Operating Instructions (42,0410,2028, ed. 016-24082016) – distributor copy (42,0410,2028 (016-24082016)) , p. 50 manufacturer document – copy from a distributor quote verified If this status code keeps recurring, contact your system engineer
  4. [4] Fronius Symo 3.0-3 – 20.0-3, Fronius Eco 25.0-3 – 27.0-3 – Operating Instructions (42,0410,2028, ed. 016-24082016) – distributor copy (42,0410,2028 (016-24082016)) , p. 49 manufacturer document – copy from a distributor quote verified When power derating
  5. [5] Fronius Symo 3.0-3 – 20.0-3, Fronius Eco 25.0-3 – 27.0-3 – Operating Instructions (42,0410,2028, ed. 016-24082016) – distributor copy (42,0410,2028 (016-24082016)) , p. 49 manufacturer document – copy from a distributor quote verified fault is rectified automatically