SolarEdge · PV inverters · SolarEdge SE3K–SE10K (three-phase inverter with power optimizers, SetApp)
Error 3x93The device is locked, due to either human intervention, or automatically due to one or more safety features.
Name in the manufacturer's documentation (fault list): The device is locked, due to either human intervention, or automatically due to one or more safety features.
[1]
In plain words (editorial)
The inverter is locked – either by a person or automatically by one or more safety features. The manual says it is important to know why the system locked in the first place; switching OFF and ON reconnects it.
When to call a service technician: If it locks again, contact support through your 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] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 6 official manufacturer document quote verified
3x93 The device is locked, due to either
- [2] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 6 official manufacturer document quote verified
Need to know why the system locked in the first place
- [3] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 6 official manufacturer document quote verified
OFF/ON to Reconnect
- [4] SolarEdge Inverters Error Codes and Troubleshooting – User Guide (Version 1.2, 2026-09) (se-inverter-installation-guide-error-codes (v1.2)) , p. 6 official manufacturer document quote verified
contact support