0E81 High
Boiler Fault Code 0E81
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 0E81 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's temperature sensors are giving conflicting readings, causing the system to stop operating safely to prevent potential overheating. (As reported on Alpha Pro Tec Plus)
Pick your boiler brand for the 0E81 fix
Source
Information for the 0E81 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