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Viessmann Coding Plug 20310304

Viessmann

Viessmann Coding Plug 20310304

Coding plug for Viessmann Vitodens appliances, part number 20310304, applicable from 29.10.2004.

At a glance

  • Also known as 2321960
Manufacturer part no.
7823555
Showing prices

£32.23

£26.86 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 20310304 coding plug is an electronic configuration component used in Viessmann Vitodens appliances. It locates in the control electronics to set the appliance's operating parameters. This version applies to units produced from 29.10.2004.

Signs this part needs replacing

  • The appliance fails to fire or does not run correctly after work on the control electronics
  • Fault or configuration codes appear and will not clear
  • The coding plug is missing, loose in its socket, or physically damaged
  • The appliance does not run to the configuration expected for the installed model

Before you order

  • Confirm the appliance is a Viessmann Vitodens WB3A Combi 26kW
  • Check that the existing coding plug carries the number 20310304
  • Confirm the appliance was manufactured from 29.10.2004 onwards
  • Coding plugs are model-specific, so verify the number against the manufacturer's documentation for the unit before fitting

Not sure which part?

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