Deye · PV inverters · Deye SUN-SG05LP1-EU (single-phase hybrid inverter, 3.6–8 kW)
F20DC over current fault of the hardware
Name in the manufacturer's documentation (user manual): DC over current fault of the hardware
[1]
In plain words (editorial)
DC overcurrent detected by the hardware. The manual says to check the PV module and battery connections; in off-grid mode, starting with a big load can cause F20, so reduce the load. Then switch DC and AC off, wait one minute and switch on again.
When to call a service technician: If the fault stays, contact the installer.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Steps given by the manufacturer (source text)
- Check PV module connect and battery connect[2]
- When in the off-grid mode, the inverter startup with big power load, it may report F20. Please reduce the load power connected[3]
- Turn off the DC switch and AC switch and then wait one minute, then turn on the DC/AC switch again[4]
- Seek help from us, if can not go back to normal state[5]
⚠ 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] 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. 46 official manufacturer document quote verified
F20 DC over current fault of the hardware
- [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. 46 official manufacturer document quote verified
Check PV module connect and battery connect
- [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. 46 official manufacturer document quote verified
When in the off-grid mode, the inverter startup with big power load, it may report F20. Please reduce the load power connected
- [4] 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. 46 official manufacturer document quote verified
Turn off the DC switch and AC switch and then wait one minute,then turn on the DC/AC switch again
- [5] 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. 46 official manufacturer document quote verified
Seek help from us, if can not go back to normal state