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ecoTEC plus 938 ErP (2015 - Present) Engineer Support
Welcome to the Engineer Technical Support section. Please use the different sections below to find answers to your technical questions. You can also find a range of useful contact numbers, including Technical support, here.
Fault Finding Sections
Technical Information
Diagnostic (D) Codes
Test (T) Codes
Installation (P) Codes
Status (S) Codes
Fault (F) codes
Roomstat Connection
wiring Diagram
Fault Finding
Available Literature
Combi Installation & Servicing Manual User Manual Flue Guide
Disclaimer: Whilst every attempt is made to ensure the accuracy of information contained on this help centre, errors can occasionally occur. The Vaillant Group cannot accept any responsibility for any reliance upon such information, any omissions or any subsequent loss or damage.Vaillant Group recommends that only qualified, gas safe registered engineers carry out repairs, installation or servicing.Vaillant Group reserves the right to amend , update, or withdraw any information within the help centre without prior notice.
All Images and content in this help centre is a copyright of Vaillant and must not be reproduced without the express permission of Vaillant Group. Such permission may be obtained by emailing servicevisit@vaillant.com with details of proposed usage.
Gas safe register is a registered trademark of the HSE and is used under license.
