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Worcester Bosch Code Plug 1138 LPG

Worcester Bosch

Worcester Bosch Code Plug 1138 LPG

Code plug 1138 for Worcester Bosch Greenstar Junior combi boilers, used to set the appliance for LPG operation.

At a glance

  • Also known as 1020414
Manufacturer part no.
87144311380
GC number
J08-372
Showing prices

£10.54

£8.78 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 code plug 1138 is a small configuration component used on Worcester Bosch Greenstar Junior combi boilers. It tells the boiler's control board which fuel the appliance is set up to run on, in this case LPG. Fitting the correct code plug ensures the control electronics apply the right operating parameters for the fuel type.

Signs this part needs replacing

  • The boiler does not fire correctly after conversion to LPG
  • Combustion readings do not match the expected values for the fuel type
  • Fault codes relating to fuel type or combustion setup appear on the appliance
  • The boiler locks out following control board work or a fuel conversion
  • The existing code plug is missing, damaged or fitted with the wrong reference

Before you order

  • Confirm the appliance model against the fit list above
  • Check whether the boiler is set up for LPG or natural gas, as the code plug differs by fuel type
  • Verify the code plug reference 1138 matches the one required for your appliance
  • Inspect the existing code plug and its seating on the control board before ordering

Not sure which part?

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