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Deye · PV inverters · Deye SUN-SG05LP1-EU (single-phase hybrid inverter, 3.6–8 kW)

F34AC Overcurrent fault

Name in the manufacturer's documentation (user manual): AC Overcurrent fault[1]

In plain words (editorial)

Too much current is drawn from the inverter's AC output. The manual says to check the loads connected to the backup output and make sure they are within the allowed power.

When to call a service technician: If the fault stays with a reduced load, contact the 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] Hybrid Inverter User Manual – SUN-3.6K/5K/6K/7K/7.6K/8K-SG05LP1-EU (ed. 2024-08) (instructions_sun-3.6-8k-sg05lp1-eu_240813_en) , p. 47 official manufacturer document quote verified F34 AC Overcurrent fault
  2. [2] Hybrid Inverter User Manual – SUN-3.6K/5K/6K/7K/7.6K/8K-SG05LP1-EU (ed. 2024-08) (instructions_sun-3.6-8k-sg05lp1-eu_240813_en) , p. 47 official manufacturer document quote verified Check the backup load connected, make sure it is in allowed power range
  3. [3] Hybrid Inverter User Manual – SUN-3.6K/5K/6K/7K/7.6K/8K-SG05LP1-EU (ed. 2024-08) (instructions_sun-3.6-8k-sg05lp1-eu_240813_en) , p. 47 official manufacturer document quote verified If the fault still exists, please contact us for help