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Viessmann Ionisation Lead Inner 7823015

Viessmann

Viessmann Ionisation Lead Inner 7823015

Inner ionisation lead, Viessmann part 7823015, for Vitodens WB3A System 49kW and 66kW boilers built from 15.01.2004.

At a glance

  • Also known as 2321416
Manufacturer part no.
7823015
Showing prices

£24.65

£20.54 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
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

The Viessmann ionisation lead (inner), part number 7823015, is a flame-sensing lead used on Vitodens WB3A System boilers manufactured from 15.01.2004. It carries the ionisation signal from the electrode to the boiler control, which uses that signal to confirm a flame is present and to shut off the gas valve if it is not.

Signs this part needs replacing

  • Boiler locks out shortly after ignition or fails to stay lit
  • Flame detection faults or ionisation error codes logged by the control
  • Intermittent ignition, with the burner lighting and then dropping out
  • Brittle, cracked or heat-damaged insulation along the lead
  • Corroded or loose terminal at the electrode or control end

Before you order

  • Confirm the boiler is a Vitodens WB3A System 49kW or 66kW
  • Check the appliance was manufactured from 15.01.2004 onwards
  • Compare the existing part number 7823015 against the lead being replaced
  • Check the serial number where the fitment list specifies one

Not sure which part?

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