How much does it cost to fix boiler error code 2 flashes red?

Typical repair cost for the boiler 2 flashes red fault is £120-250 including labour.

2 flashes red High

Boiler Fault Code 2 flashes red

Also written as 2FLASHESRED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 2 flashes red 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 switched itself off because it has become dangerously hot inside, likely due to a blockage in the water flow or a mechanical internal fault. (As reported on Main Insul 7)

Pick your boiler brand for the 2 flashes red fix

Main 2 flashes red 1 model

Source

Information for the 2 flashes red 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