Technical Service Bulletin
Title: Detailed fault codes at coding address 38
▪ Vitodens 200, WB2B Series (all models)
▪ Vitodens 200-W, B2HA & B2HB Series (all models)
▪ Vitodens 222-F, B2TA & B2TB Series (all models)
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.