Control boards

The electronic board is part of the boiler control system. The catalogue includes main boards, BMU control modules and assemblies with a display: these are different items, and each product page states which one is offered.

Compare the model and reference before choosing. For example, see the Vaillant ecoTEC plus 3-5 BMU board, ref. 0020035420 or the Junkers Cerapur Comfort ZWBC 30-2C board, ref. 8748300923. An ignition or operating symptom alone does not confirm that the board is the cause.