Worcester Bosch Code Plug 8716122270

The Worcester Bosch 8716122270 is a code plug for the Greenstar range. It is a plug-in module that the appliance's control board reads to establish the model configuration and output it is running, so the electronics match the boiler it is fitted to. It is used on the Greenstar 4000 System GR4700iW 18 S NG appliances listed below.

The same plug carries the alternative part number 8922992, which is useful when cross-referencing an older order or a parts list that quotes the second number.

• The boiler does not recognise its own model configuration after a board change or repair.
• Output or operating parameters appear to be set for the wrong variant of the appliance.
• Fault or lockout codes appear that relate to configuration rather than to a mechanical component.
• The plug is visibly damaged, corroded or loose in its socket on the control board.

• Confirm the appliance GC number and model from the data badge before ordering, as the code plug is model-specific.
• Cross-check the alternative number 8922992 against any parts list or previous order you are working from.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.