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Viessmann Flow Sensor WB2A-44/60 7843834

Viessmann

Viessmann Flow Sensor WB2A-44/60 7843834

Viessmann flow sensor 7843834 for WB2A-44/60 gas boilers, used to detect water flow through the appliance.

At a glance

  • Also known as 2320454
Manufacturer part no.
7843834
Showing prices

£260.30

£216.92 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 7843834 is a flow sensor for the WB2A-44/60 gas boiler. It registers water flow through the appliance and passes that signal to the boiler control, which uses it to confirm circulation before and during a firing sequence. The part is listed under flow switches in the gas boiler spares range.

Before you order

  • Check the part number 7843834 against the identification plate on the appliance.
  • Confirm the boiler model is WB2A-44/60, as given in the product description.
  • Inspect the sensor connection and wiring plug on the existing unit so the replacement matches the loom in place.
  • Confirm whether the appliance requires any gasket or seal at the sensor port, as these are not stated in the supplied data.

Not sure which part?

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