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Viessmann Flow Sensor 7828749

Viessmann

Viessmann Flow Sensor 7828749

Viessmann 7828749 flow sensor for Vitodens 100-W combi boilers, used to detect domestic hot water flow.

At a glance

  • Appliance family: Vitodens 100-W combi boilers
  • Also known as FLOW-SENSOR-B1KA--CPK, 2321002, N9119
Manufacturer part no.
7828749
Showing prices

£104.88

£87.40 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 7828749 is a flow sensor for Vitodens 100-W combi boilers. It detects water flow through the domestic hot water circuit so the boiler can respond to a hot water draw-off. It is listed in the thermistor category of the manufacturer's parts range.

Signs this part needs replacing

  • Hot water draw-off is not recognised by the boiler
  • The boiler fails to fire when a hot water tap is opened
  • Domestic hot water temperature fluctuates or runs cold
  • Hot water operation is intermittent

Before you order

  • Check the boiler model and serial number against the fitment list above
  • Confirm the part number on the existing component is 7828749
  • Verify the appliance variant, as several Vitodens 100-W versions are listed

Not sure which part?

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