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

F55DC_VoltHigh_Fault

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

In plain words (editorial)

The internal DC bus voltage is too high – the manual lists a too high battery voltage or a PV input voltage outside the allowed range.

When to call a service technician: Battery and PV voltage 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. 6 manufacturer document – copy from a distributor quote verified F55 DC_VoltHigh_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. 49 official manufacturer document quote verified BUS voltage is too high
  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. 49 official manufacturer document quote verified Check whether battery voltage is too high;
  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. 49 official manufacturer document quote verified check the PV input voltage, make sure it is within the allowed
  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. 49 official manufacturer document quote verified Check whether battery voltage is too high;
  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. 49 official manufacturer document quote verified check the PV input voltage, make sure it is within the allowed
  7. [7] 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. 49 official manufacturer document quote verified Seek help from us, if can not go back to normal state.