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Worcester Bosch Code Plug 1133 87144311330

Worcester Bosch

Worcester Bosch Code Plug 1133 87144311330

Code plug 1133 for Worcester Bosch Greenstar 30 SI Combi boilers, used to set the low NOx option after FD 988.

At a glance

  • Also known as 1030137
Manufacturer part no.
87144311330
GC number
H90-699
Showing prices

£9.96

£8.30 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 Worcester Bosch code plug 1133 (part number 87144311330) is a configuration plug for Greenstar 30 SI Combi boilers. It is used to set the low NOx option on appliances after FD 988. The plug fits into the boiler's printed circuit board to enable the correct combustion settings for the low NOx mode.

Signs this part needs replacing

  • Boiler fails to fire or repeatedly locks out.
  • Combustion readings are incorrect or unstable.
  • Error codes relating to gas type or low NOx operation appear.
  • The boiler does not run in low NOx mode.
  • The existing code plug is damaged or missing.

Before you order

  • Check the boiler model and GC number against the fit list above.
  • Confirm the appliance's FD number is 988 or later.
  • Verify the existing code plug's markings match 1133.
  • Check whether your appliance is natural gas or LPG.

Not sure which part?

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