BoilerFaultCodes Green flashing + red flashing High
Boiler Fault Code Green flashing + red flashing
Also written as GREENFLASHINGREDFLASHING — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Green flashing + red flashing 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 is struggling because it detects both a faulty water temperature sensor and low water pressure, which has caused it to stop working to protect itself. (As reported on Vokera Compact 28 SE)
Pick your boiler brand for the Green flashing + red flashing fix
Source
Information for the Green flashing + red flashing 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