Technical Service Bulletin

Title:  Detailed fault codes at coding address 38

Applies to: 
▪  Vitodens 200, WB2B Series (all models)
▪  Vitodens 200-W, B2HA & B2HB Series (all models)
▪  Vitodens 222-F, B2TA & B2TB Series (all models)

Vitodens 200-W and 222-F boilers

Important Disclaimer

The information in this bulletin is intended exclusively for licensed heating contractors, and is NOT intended for the end user. This material is NOT intended to take the place of the information contained in the manuals shipped with the product.

Use of this information by unqualified personnel may result in property damage, personal injury or death.

End users are asked to contact a qualified contractor for all installation and service work. If you need assistance finding a contractor in your area, contact your Viessmann Sales Representative, or use our Contractor Locator.

By hitting "Yes" below you confirm that you have read, understood and agree to this warning, that you are licensed and hold the current, appropriate licences to work on said equipment in the location and/or jurisdiction of installation.


In order to provide additional troubleshooting resources for our contractors, information about the detailed fault codes stored in coding address 38 has been published in the latest editions of the Start-up and Service Instructions for Vitodens 200-W and 222-F.

These detailed fault codes can also be found in our Fault Code Checker webapp.

A complete listing of the detailed fault codes is also available in spreadsheet (XLSX) and PDF format, via the download links below.


> Listing of Detailed Fault Codes in PDF Format (44 KB)

> Listing of Detailed Fault Codes in XLSX Format (15 KB)

Viessmann Technical Services 

Bulletin ID:     TSB-009

Date issued:   May 26, 2017

Updated on:   Nov 30, 2017

Revision #:      02