BoilerFaultCodes All Ultracom High
Boiler Fault Code All Ultracom
Also written as ALLULTRACOM — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code All Ultracom 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 power or is experiencing a total electronics failure, meaning it cannot operate or tell you what is wrong. (As reported on Glow-worm HXi)
Pick your boiler brand for the All Ultracom fix
Source
Information for the All Ultracom 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