EL
ErrorLib
Brands
||
  1. Home
  2. Fronius
  3. Symo Advanced Manual
  4. 515
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.

515

No communication with filter possible

Fronius · Symo Advanced Manual

What does 515 mean?

Communication has been lost with an internal or external filter component. This can affect power quality and lead to restrictions in energy feeding.

Common Causes

  • Internal communication bus error to the filter module
  • Malfunction or disconnection of the filter unit

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 44)Search more codes in this manual