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Worcester Bosch Code Plug 1121 87144311210

Worcester Bosch

Worcester Bosch Code Plug 1121 87144311210

Code plug 1121 for Worcester Bosch Greenstar 15I System boilers, manufacturer part number 87144311210.

At a glance

  • Appliance family: Greenstar 15I System
  • Also known as 1020874
Manufacturer part no.
87144311210
GC number
H75-718
Showing prices

£12.00

£10.00 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 Code Plug 1121 is a Worcester Bosch configuration plug supplied under part number 87144311210. It fits to the appliance control board and sets the boiler's operating parameters for the installed fuel type. It is listed for use on the Greenstar 15I System appliance family.

Signs this part needs replacing

  • The boiler does not recognise the correct fuel type after a control board change.
  • Fault or configuration codes relating to fuel settings appear on the appliance.
  • Combustion readings are incorrect for the fuel being used.
  • The boiler fails to fire or runs incorrectly following board replacement.
  • The existing code plug is missing, damaged or has loose or corroded pins.

Before you order

  • Confirm the appliance model and GC number against the fitment list above.
  • Check the fuel type at the installation matches the LPG designation of this code plug.
  • Check the control board part number, as the required code plug can vary with board revision.
  • Compare the number printed on the existing code plug before ordering.

Not sure which part?

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