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Biasi Diverter Valve Actuator BI1621105

Biasi

Biasi Diverter Valve Actuator BI1621105

Biasi BI1621105 diverter valve actuator for Basica COND M275V combi boilers.

At a glance

  • Appliance family: Basica COND M275V
  • Also known as 1651788
Manufacturer part no.
BI1621105
Showing prices

£49.68

£41.40 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 Biasi BI1621105 is a diverter valve actuator used on Biasi Basica COND M275V combi boilers. It drives the diverter valve to switch the appliance between domestic hot water and central heating operation. The actuator is the motorised head that moves the valve spindle on demand from the boiler's control board.

Signs this part needs replacing

  • No domestic hot water while the heating continues to run
  • Hot water temperature fluctuating or running cold when a tap is opened
  • Heating circuit warming up when only hot water is demanded
  • Diverter valve failing to change position, or the actuator motor not running
  • Actuator head buzzing, sticking or showing no response to boiler demand

Before you order

  • Confirm your boiler model against the Basica COND M275V variants listed above
  • Check the existing actuator part number on the appliance before ordering
  • Inspect the diverter valve body and spindle for wear, as a seized valve can damage a new actuator
  • Confirm the fault is with the actuator rather than the valve cartridge or control board

Not sure which part?

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