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Viessmann Ionization Electrode C/W Gasket 7834235

Viessmann

Viessmann Ionization Electrode C/W Gasket 7834235

Viessmann ionization electrode with gasket, part 7834235, for Vitodens 200-W WB2B boilers.

At a glance

  • Appliance family: Vitodens 200-W WB2B
  • Also known as 2321228
Manufacturer part no.
7834235
Showing prices

£54.34

£45.28 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

This is a Viessmann ionization electrode supplied complete with its gasket, part number 7834235. It is a flame-monitoring electrode used in the combustion circuit of Vitodens 200-W WB2B gas boilers, where it signals burner flame presence to the control PCB. The gasket is included as part of the assembly so the electrode can be refitted with a fresh seal.

Signs this part needs replacing

  • Boiler repeatedly locks out or fails to prove flame after the burner has ignited
  • Intermittent flame-loss faults logged by the control, often after the boiler has run for a period
  • Difficult or delayed ignition with the burner lighting and then cutting out
  • Visible damage to the electrode probe, ceramic insulator or its lead
  • A deteriorated or hardened gasket at the electrode mounting point

Before you order

  • Confirm the boiler model and serial number against the fitment list above, as the WB2B range covers several outputs and build batches
  • Inspect the electrode and its lead for cracks, contamination or mechanical damage before replacing
  • Check that the gasket seating face on the combustion cover is clean and undamaged so the new seal can seat properly
  • Confirm the part number 7834235 matches the electrode currently fitted

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.