BoilerFaultCodes ALL 72 Medium
Boiler Fault Code ALL 72
Also written as ALL72 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code ALL 72 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 is struggling to accurately measure the temperature of the water flowing out of it because the temperature sensor has likely become loose or shifted from its correct position. (As reported on Sime Murelle Revolution 30)
Pick your boiler brand for the ALL 72 fix
Source
Information for the ALL 72 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