How much does it cost to fix boiler error code Group 2, 8 flashes?

Typical repair cost for the boiler Group 2, 8 flashes fault is £150-300 including labour.

Group 2, 8 flashes Emergency

Boiler Fault Code Group 2, 8 flashes

Also written as GROUP28FLASHES — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Group 2, 8 flashes appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an internal overheating issue or a blocked exhaust and has shut itself off to prevent damage or safety hazards. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the Group 2, 8 flashes fix

Worcester Bosch Group 2, 8 flashes 1 model

Source

Information for the Group 2, 8 flashes fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026