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Viessmann Wiring Harness X 11 7818281

Viessmann

Viessmann Wiring Harness X 11 7818281

Viessmann wiring harness, reference X 11, for Vitodens 200 WB2 gas boilers.

At a glance

  • Appliance family: Vitodens 200 WB2
  • Also known as 2321912
Manufacturer part no.
7818281
Showing prices

£33.50

£27.92 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 Viessmann Wiring Harness X 11, part number 7818281, is a wiring loom used on Vitodens 200 WB2 gas boilers. It carries low-voltage control and signalling connections between components within the appliance. The harness is identified by the X 11 reference on the original loom.

Signs this part needs replacing

  • Intermittent burner, fan or pump operation traced to the harness circuit.
  • Chafed, cracked or heat-damaged insulation on the loom.
  • Loose, corroded or discoloured plug connectors that will not seat securely.
  • Fault codes that persist after the connected components have been tested.
  • Boiler failing to fire or locking out when continuity through the loom is suspect.

Before you order

  • Confirm the boiler model and serial number against the fits list above.
  • Check the X 11 reference on the existing harness matches this part.
  • Inspect the connector layout and number of ways on the old harness before ordering.
  • Verify the part number 7818281 against the appliance documentation.

Not sure which part?

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