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Deye · Deye SUN-SG05LP1-EU (single-phase hybrid inverter, 3.6–8 kW) · Operation

Deye SG05LP1: how to read the alarm code and alarm history

Summary (editorial)

A solid red Alarm LED means a fault or warning. The code appears on the home screen; details are in the System Alarms menu and the Device Info page.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

From the manufacturer's documentation (English source wording, with page)

  1. Alarm: red LED solid light – malfunction or warning[1]
  2. Home screen icon turns into comm./Fxx; details in System Alarms menu[2]
  3. Device Info page shows inverter ID, version and alarm codes[3]
  4. Alarm entry: F64 Heatsink_HighTemp_Fault with date/time[4]
  5. Setting menu – Device Info.[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. [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. 28 official manufacturer document quote verified Red led solid light
  2. [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. 29 official manufacturer document quote verified detail error info can be viewed in the System Alarms menu
  3. [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. 43 official manufacturer document quote verified This page show Inverter ID, Inverter version and alarm
  4. [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. 43 official manufacturer document quote verified f64 heatsink_hightemp_fault
  5. [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. 33 official manufacturer document quote verified Device Info.