BoilerFaultCodes RED LED on continuously High
Boiler Fault Code RED LED on continuously
Also written as REDLEDONCONTINUOUSLY — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code RED LED on continuously appears across 1 boiler brand and 5 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 a failure and stopped working as a safety precaution, likely because it has overheated or is receiving an incorrect signal from your thermostat. (As reported on Potterton Prima 30B)
Pick your boiler brand for the RED LED on continuously fix
Source
Information for the RED LED on continuously 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