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Worcester Bosch Printed Circuit Board 87483004050

Worcester Bosch

Worcester Bosch Printed Circuit Board 87483004050

Worcester Bosch 87483004050 printed circuit board (PCB) for the Greenstar RSF natural gas boiler, controlling ignition, sequencing and safety functions.

At a glance

  • Part type: Printed circuit board (PCB)
  • Also known as 1020367
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87483004050
Showing prices

£480.89

£400.74 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 87483004050 is a printed circuit board (PCB) used in Worcester Bosch Greenstar RSF natural gas boilers. It is the main control board, handling ignition sequencing, burner modulation, pump and fan control, and the safety interlocks that govern boiler operation. The board also carries the connections for the appliance's sensors, thermostat inputs and fault signalling.

Signs this part needs replacing

  • The boiler fails to respond to a demand for heat or hot water
  • No display, blank display or repeated fault codes on the boiler controls
  • The appliance locks out shortly after ignition or during the ignition sequence
  • Fan, pump or burner behaviour becomes erratic or stops entirely
  • Visible heat damage, scorching or corrosion on the board itself

Before you order

  • Confirm the boiler model and serial number against the compatibility list before ordering, as board variants are not interchangeable across the range
  • Check the existing board's part number and any alternative number printed on it to confirm a match
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
  • All parts are non-returnable and non-refundable, so verify the correct part for your boiler before purchase

Not sure which part?

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