BoilerFaultCodes ALL 62 High
Boiler Fault Code ALL 62
Also written as ALL62 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code ALL 62 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 has lost its internal settings and needs a professional software calibration to communicate correctly with its internal components. (As reported on Sime Murelle Advanced HE MkII Combi)
Pick your boiler brand for the ALL 62 fix
Source
Information for the ALL 62 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