Deye · PV inverters · Deye SUN-SG04LP3-EU (three-phase hybrid inverter, 5–12 kW)
F34AC_Overload_Fault
Name in the manufacturer's documentation (fault list): AC_Overload_Fault
[1]
In plain words (editorial)
AC overload: the loads connected to the backup output exceed the allowed power.
When to call a service technician: Reduce the backup load; if the fault stays, contact the installer.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- Backup load connected outside the allowed power range[2]
Steps given by the manufacturer (source text)
- If the fault still exists, please contact us for help[3]
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
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] Deye Three Phase Hybrid Inverter SUN-5-12KWSG04LP3 Fault List , p. 4 manufacturer document – copy from a distributor quote verified
F34 AC_Overload_Fault
- [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
Check the backup load connected, make sure it is in allowed
- [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
If the fault still exists, please contact us for help