SolarEdge · PV inverters · SolarEdge SE3K–SE10K (three-phase inverter with power optimizers, SetApp)
Error 2x26Ground faults may occur due to insufficient insulation to the ground.
Name in the manufacturer's documentation (fault list): Ground faults may occur due to insufficient insulation to the ground.
[1]
In plain words (editorial)
Ground fault – caused by insufficient insulation to ground. The manual says strings with a grounding fault must not be connected to the inverter.
When to call a service technician: A certified installer must fix the faulty string before it is reconnected.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Steps given by the manufacturer (source text)
⚠ 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] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 16 official manufacturer document quote verified
2x26 Ground faults may occur due to
- [2] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 16 official manufacturer document quote verified
Do not connect strings with a grounding fault to the inverter. A certified installer must fix the faulty string before connecting it to the inverter
- [3] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 16 official manufacturer document quote verified
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