Vaillant Electrode Ignition And Sensing 0020195481

Vaillant Electrode Ignition And Sensing 0020195481

The Vaillant Electrode Ignition and Sensing (Part No. 0020195481) is a genuine OEM (Original Equipment Manufacturer) critical service component. This dual-purpose part is responsible for both generating the high-voltage spark that ignites the gas-air mixture and monitoring the presence of the flame through ionisation. It is an essential part of the boiler's combustion system, ensuring safe start-ups and continuous operation.

This part is the current updated version for many modern ecoTEC models, replacing several older electrode designs.

Key Features and Specifications
Integrated Design: Combines the ignition spark function and the flame-sensing (ionisation) function into a single, high-performance assembly.

High-Heat Ceramic Insulation: Features a specialized ceramic body designed to prevent electrical arcing and withstand the intense temperatures inside the combustion chamber.

Precision Sensing: The ionisation probe communicates directly with the PCB; if the flame is not detected or is unstable, the boiler will immediately shut down for safety.

Genuine Vaillant Part: Manufactured to the precise metallurgical specifications required to prevent premature erosion of the electrode tips.

Direct Fit: Engineered for the modern ecoTEC and ecoFIT ranges, ensuring the spark gap is perfectly aligned with the burner surface.

Boiler Compatibility
This electrode is found in the latest generations of Vaillant's high-efficiency condensing boilers. Common compatible models include:

ecoTEC Plus (Later Models): 612, 615, 618, 624, 630, 637, 824, 831, 837.

ecoTEC Pro: 24, 28, 30.

ecoFIT Pure: 412, 415, 418, 425, 430, 435, 612, 615, 618, 625, 630, 825, 830, 835.

Home Glow: Various newer system and combi models.

Technical Tip: If your boiler is failing to ignite and displaying fault codes F.28 or F.29, a worn or contaminated electrode is a primary suspect. Over time, carbon deposits (soot) or erosion of the metal tip can prevent a strong spark or cause a false "flame failure" reading.

Installation and Maintenance
Because this component is part of the combustion process and enters the sealed combustion chamber, it must be installed by a Gas Safe Registered engineer. During a standard annual service, the electrode should be inspected for cracks in the ceramic and cleaned of any debris. If the tips are significantly eroded, it should be replaced to ensure the boiler starts reliably throughout the winter.

Essential Companion Products
To perform a professional combustion service, the following parts are typically replaced alongside the electrode:

Direct Product Link: Vaillant Electrode - 0020195481

Burner Door Seal: Vaillant Gasket - 0020038679

Combustion Gasket: Vaillant Gasket Chamber Cover - 0020195459

Ignition Lead: Vaillant Cable - 0020135119

Specialist Support and Local Collection
Is your boiler making a loud "bang" on ignition or locking out intermittently? Our trade counter team can help your engineer confirm if this electrode is the correct fix for your specific boiler serial number.

Visit our trade counter and Bathroom Showroom at 61 Fullers Road, E18 2QB for expert technical advice and quick access to genuine Vaillant spares.