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Worcester Bosch Digistat Optimiser Transmitter 87161144620

Worcester Bosch

Worcester Bosch Digistat Optimiser Transmitter 87161144620

Worcester Bosch Digistat Optimiser Transmitter, part 87161144620, a programmer for controlling heating and hot water schedules on Worcester Bosch boilers.

At a glance

  • Part type: Clocks and timers
  • Also known as 1014452
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161144620
GC number
721-216
Showing prices

£339.58

£282.98 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 Digistat Optimiser Transmitter is the programmer unit for Worcester Bosch heating and hot water systems. It provides the user interface that sets when the boiler fires for central heating and hot water, and it also carries the room temperature setting. It is supplied as a replacement component for the Worcester Bosch appliance family listed below.

Signs this part needs replacing

  • The boiler fails to switch on or off at the times set in the programme.
  • The display is blank, dim or shows incomplete segments.
  • Buttons do not respond when adjusting times or temperature.
  • Programme settings are lost after a power interruption.
  • Hot water and heating run continuously or not at all, regardless of the schedule.

Before you order

  • Check the GC number and appliance serial plate to confirm the correct programmer variant for your boiler.
  • Compare the numbers on the existing unit against the alternative part numbers listed below before ordering.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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