Worcester Bosch Burner Assembly CDi FS Highflow 8716118278

The Worcester Bosch 8716118278 is a complete burner assembly used in the Greenstar FS and Highflow CDi range of regular gas boilers. It carries the gas/air mixture to the combustion chamber and establishes the flame pattern the boiler's control system expects, so it sits at the centre of combustion performance, ignition reliability and flue gas quality. The assembly is supplied as a single unit and is listed by Worcester Bosch under part number 8716118278, with 2245043 as an alternative reference.

• Yellow, lazy or lifting flame instead of a stable blue flame
• Sooting around the burner or heat exchanger, or black marks at the combustion chamber
• Repeated ignition failure or lockout on start-up
• Combustion readings drifting outside the expected CO/CO2 range at service
• Visible corrosion, cracking or distortion of the burner surface or its mountings

• Check the GC number and appliance serial plate to confirm the boiler model before ordering.
• Confirm the alternative number 2245043 matches the part currently fitted.
• Inspect the burner gasket and seal during removal and replace if it is disturbed or degraded.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.