EL
ErrorLib
Brands
||
  1. Home
  2. Fronius
  3. Symo Advanced Manual
  4. 416
About·Privacy·Terms

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.

416

No communication possible between power stage set and control system

Fronius · Symo Advanced Manual

What does 416 mean?

Communication has been lost between the inverter's power conversion stage and its central control system. The inverter will automatically attempt to re-establish the connection and, if successful, resume feeding energy into the grid.

Common Causes

  • Internal communication bus error or interruption
  • Faulty connection between control and power stage boards
  • Malfunction in either the control or power stage module

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If this status code is displayed all the time, notify a Fronius-trained service engineer.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

102AC voltage too high103AC voltage too low105AC frequency too high
Source: Fronius Symo Advanced Manual
Open Manual (Page 42)Search more codes in this manual