The Vaillant 0020143440 Electrode Maintenance Kit is a genuine replacement service kit designed to refresh the ignition and flame detection electrodes in ecoTEC VU/VU boilers. These electrodes play a vital role in starting combustion and ensuring the burner lights properly on demand. Over time, electrodes can deteriorate, become coated or shift slightly, leading to ignition difficulty, misfires or boiler lockouts. Replacing worn electrodes with the correct maintenance kit helps restore reliable ignition performance and supports efficient, safe combustion.

This maintenance kit is compatible with Vaillant ecoTEC VU and VU series boilers that specify part number 0020143440 in their service and parts documentation. To ensure correct fitment and reliable operation, always verify the part number on your existing electrodes or consult your boiler’s service information before installation, as electrode types and mounts vary between models.

Supplied ready for direct replacement, the 0020143440 Electrode Maintenance Kit includes the necessary electrodes and associated seals or fixings, allowing a qualified engineer to install and restore proper ignition and flame detection performance. Choosing this genuine Vaillant kit helps maintain dependable boiler starts, improves combustion stability and contributes to consistent heating and hot-water delivery in compatible ecoTEC VU/VU boilers.