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Viessmann Circuit Board Adaptor 7819950

Viessmann

Viessmann Circuit Board Adaptor 7819950

Viessmann circuit board adaptor (LON module adaptor) for Vitodens 200 WB2 and WB2A series appliances.

At a glance

  • Appliance family: Vitodens 200 WB2 / WB2A
  • Also known as 2321752
Manufacturer part no.
7819950
Showing prices

£94.08

£78.40 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 CIRCUIT BOARD ADAPTOR is a Viessmann circuit board adaptor supplied as a LON module adaptor. It fits within the Vitodens 200 WB2 and WB2A appliance families, where it provides the interface between the appliance control board and the LON communication module. It is a service part intended for installation by a competent heating engineer.

Signs this part needs replacing

  • The boiler fails to communicate with a LON-based control or building management system
  • Communication fault or bus error codes appear on the appliance or controller
  • The LON module is not recognised by the control board
  • Intermittent communication between the boiler and connected controls

Before you order

  • Confirm the appliance model matches one of the fitted models listed above
  • Check the appliance serial number against the listed serial numbers
  • Verify the fault lies with the adaptor rather than the LON module or control board
  • Confirm the existing adaptor carries the same Viessmann part number

Not sure which part?

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