BoilerFaultCodes A80 High
Boiler Fault Code A80
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code A80 appears across 2 boiler brands and 4 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 that the water returning from your radiators is either too hot or the temperature sensor is sending an incorrect reading, causing the system to stop as a safety precaution. (As reported on Vokera Vibe Max)
Pick your boiler brand for the A80 fix
Source
Information for the A80 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