BoilerFaultCodes 2 green flashes High
Boiler Fault Code 2 green flashes
Also written as 2GREENFLASHES — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2 green flashes appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has paused because a safety switch or external control has told it to stop running, often due to an issue with the condensate pipe or a connected external device. (As reported on Baxi 600 Heat)
Pick your boiler brand for the 2 green flashes fix
Source
Information for the 2 green 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 7 July 2026