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Worcester Bosch Greenstar PCB 8748300939

Refurbished

Worcester Bosch Greenstar PCB 8748300939

Refurbished Worcester Bosch printed circuit board for Greenstar i Junior and Si combi boilers.

At a glance

  • Also known as 9500112
  • Fitting and commissioning must be carried out by a Gas Safe registered engineer
Manufacturer part no.
N0412-1
Showing prices

£77.76

£64.80 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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

A printed circuit board for Worcester Bosch Greenstar combi boilers, part number 8748300939. It is the boiler's control centre, running ignition, pump and fan timing and the safety interlocks. This is a refurbished, tested unit.

Signs this part needs replacing

  • Boiler fails to ignite or locks out repeatedly
  • Display blank or unresponsive
  • Pump or fan not responding to a call for heat
  • Intermittent faults with no obvious cause

Before you order

  • Match 8748300939 against the number printed on your existing board
  • Isolate the electrical supply before removing the old board
  • Fitting and commissioning 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.