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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

1191

AfciDataTransfer

Fronius · Symo Advanced

What does 1191 mean?

An electric arc has been identified on the PV system, triggering an Arc Fault Circuit Interrupter (AFCI) event. This status indicates that an arc fault was detected and recorded by the inverter. The inverter's operating LED flashes yellow.

Common Causes

  • An electric arc has been identified on the PV system.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    No action required for this notification; it serves as an informational alert that an arc fault was detected.

Browse all codes in this manual (41)
Verified technical data. Last updated: April 2026

Related Faults

102AC Voltage Range103AC Frequency Range1030WSD Open
Source: Fronius Symo Advanced
Open Manual (Page 149)Search more codes in this manual