Description
Viessmann 7831346 Ignition Ionisation Electrode | Vitodens 100-W
The Viessmann 7831346 Ignition and Ionisation Electrode is a genuine replacement component responsible for igniting the burner and continuously monitoring flame stability during boiler operation. This dual-function electrode is critical for safe combustion and reliable boiler performance.
Supplied complete with the Viessmann burner gasket (7836177), this part ensures a secure seal at the burner, preventing combustion leaks and ignition issues. A failing ignition or ionisation electrode can result in ignition failure, flame loss, or repeated boiler lockouts.
This electrode is specifically designed for selected Viessmann Vitodens 100-W WB1B heat-only and compact models. Always confirm compatibility using the GC number on your boiler data plate before purchase.
Installation must be carried out by a Gas Safe registered engineer.
Viessmann Vitodens 100-W Heat Only (WB1B Series)
Vitodens 100-W WB1B 13 kW Heat Only – GC No: 41-819-21
Vitodens 100-W WB1B 16 kW Heat Only – GC No: 41-819-22
Vitodens 100-W WB1B 19 kW Heat Only – GC No: 41-819-23
Vitodens 100-W WB1B 26 kW Heat Only – GC No: 41-819-24
Vitodens 100-W WB1B 35 kW Heat Only – GC No: 41-819-25
Viessmann Vitodens 100-W Compact Models
Vitodens 100-WB1B 13 kW Compact – Serial No: 7416307
Vitodens 100-WB1B 16 kW Compact – Serial No: 7416302
Vitodens 100-WB1B 19 kW Compact – Serial No: 7416303
Vitodens 100-WB1B 26 kW Compact – Serial No: 7416304
If you’re looking for a Viessmann Spares  follow the link provided.
Delivery and Return
Place orders before 1 PM for same-day dispatch via reliable couriers. Choose from standard or next-day delivery options. Returns are accepted within 30 days if the part is unused and in original packaging. Always use a Gas Safe registered engineer for installation and warranty compliance.







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