Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Worcester Bosch Printed Circuit Board Greenstar FS 8748300917

Worcester Bosch

Worcester Bosch Printed Circuit Board Greenstar FS 8748300917

Printed circuit board for Worcester Bosch Greenstar FS 30CDi and 42CDi ErP regular boilers, part 8748300917.

At a glance

  • Part type: Printed circuit board (PCB)
  • Appliance family: Greenstar FS regular (ErP)
  • Also known as 1031606
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8748300917
Showing prices

£139.30

£116.08 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 Worcester Bosch 8748300917 is a printed circuit board (PCB) for Greenstar FS regular gas boilers. It carries the control electronics that sequence ignition, monitor the flame, and regulate fan, pump and burner operation through a heating or hot water demand. It is the board used across the Greenstar FS 30CDi and 42CDi ErP regular range, in both natural gas and LPG variants.

Signs this part needs replacing

  • The boiler shows no response to a heating or hot water demand, with the display dead or blank.
  • Repeated lockouts that clear only after a power cycle, or lockouts that will not clear at all.
  • The fan, pump or burner fails to start even though the demand and thermostat signals are present.
  • Intermittent shutdowns, erratic display behaviour or fault codes that return after resetting.
  • Visible damage on the board itself, such as scorching, a blown track or a swollen component.

Before you order

  • Check the appliance GC number and model variant against the compatibility list above; the 30CDi and 42CDi ErP regular models use different GC numbers.
  • Compare the part number on the existing board with 8748300917 and the alternative 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.