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

F16GFCI_Failure

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

In plain words (editorial)

GFCI (leakage current) failure. The manual says to check the PV-side cable ground connection and whether the PV is unstable, and to restart the system 2–3 times.

When to call a service technician: If the fault still exists, contact your installer or Deye support.

✎ 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. 2 manufacturer document – copy from a distributor quote verified F16 GFCI_Failure
  2. [2] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified Check the PV side cable ground connection
  3. [3] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified Restart the system 2-3 times
  4. [4] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified if the fault still existing, please contact us for help
  5. [5] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified Check the PV connection and whether the PV is unstable
  6. [6] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified restart the inverter 3 times
  7. [7] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 2 manufacturer document – copy from a distributor quote verified Seek help from us, if can not go back to normal state