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Worcester Bosch Code Plug 8716121818

Worcester Bosch

Worcester Bosch Code Plug 8716121818

Worcester Bosch code plug 8716121818, alternative number 8922991, for Greenstar 4000 System GR4700iW 18 S NG appliances.

At a glance

  • Part type: Code plug
  • Also known as 20168, 8922991
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8716121818
Showing prices

£7.48

£6.23 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 8716121818 is a code plug used on Greenstar 4000 System appliances. The code plug carries the configuration data for the boiler variant it is fitted to, allowing the control board to identify the appliance and apply the correct operating parameters. It is a small plug-in item that locates on the control electronics.

Signs this part needs replacing

  • The appliance fails to fire, locks out or repeats a fault code after the control board has been changed.
  • The boiler runs on incorrect parameters for its model, with output, fan speed or modulation behaving outside the expected range for the variant.
  • Intermittent operation or unexpected shutdowns that persist after the usual electrical checks.
  • The plug shows physical damage, a poor contact or discolouration at its terminals.
  • The fitted code plug does not match the appliance model or GC number on the data badge.

Before you order

  • Check the model and GC number on the appliance data badge against the compatibility list to confirm the correct variant.
  • Confirm the number on the existing plug, and note that 8922991 is also used for this item.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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