BoilerFaultCodes Xtramax HE Range High
Boiler Fault Code Xtramax HE Range
Also written as XTRAMAXHERANGE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Xtramax HE Range 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 detected that the water temperature is rising too quickly, which usually means water isn't circulating properly through the system. (As reported on Glow-worm 38cxi)
Pick your boiler brand for the Xtramax HE Range fix
Source
Information for the Xtramax HE Range 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