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Deye · PV inverters · Deye SUN-SG04LP3-EU (three-phase hybrid inverter, 5–12 kW)

F23Tz_GFCI_OC_Fault

Name in the manufacturer's documentation (fault list): Tz_GFCI_OC_Fault[1]

In plain words (editorial)

Leakage current fault. The manual says to check the ground connection of the PV side cables and restart the system 2–3 times.

When to call a service technician: PV wiring checks are for 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] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 3 manufacturer document – copy from a distributor quote verified F23 Tz_GFCI_OC_Fault
  2. [2] Hybrid Inverter User Manual – SUN-5K/6K/8K/10K/12K-SG04LP3-EU (ed. 2024-08) (V3.3.0 (instructions_sun-5-12k-sg04lp3-eu_240813_en)) , p. 48 official manufacturer document quote verified Leakage current fault
  3. [3] Hybrid Inverter User Manual – SUN-5K/6K/8K/10K/12K-SG04LP3-EU (ed. 2024-08) (V3.3.0 (instructions_sun-5-12k-sg04lp3-eu_240813_en)) , p. 48 official manufacturer document quote verified Check PV side cable ground connection.
  4. [4] Hybrid Inverter User Manual – SUN-5K/6K/8K/10K/12K-SG04LP3-EU (ed. 2024-08) (V3.3.0 (instructions_sun-5-12k-sg04lp3-eu_240813_en)) , p. 48 official manufacturer document quote verified Check PV side cable ground connection.
  5. [5] Hybrid Inverter User Manual – SUN-5K/6K/8K/10K/12K-SG04LP3-EU (ed. 2024-08) (V3.3.0 (instructions_sun-5-12k-sg04lp3-eu_240813_en)) , p. 48 official manufacturer document quote verified Restart the system 2~3 times.
  6. [6] Hybrid Inverter User Manual – SUN-5K/6K/8K/10K/12K-SG04LP3-EU (ed. 2024-08) (V3.3.0 (instructions_sun-5-12k-sg04lp3-eu_240813_en)) , p. 48 official manufacturer document quote verified If the fault still exists, please contact us for help.