BoilerFaultCodes WATER TEMPERATURE High
Boiler Fault Code WATER TEMPERATURE
Also written as WATERTEMPERATURE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code WATER TEMPERATURE appears across 1 boiler brand and 2 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 heat your hot water properly, usually because the water is flowing through it too quickly for it to warm up or because the gas supply is restricted. (As reported on Chaffoteaux Britony II 30FF)
Pick your boiler brand for the WATER TEMPERATURE fix
Source
Information for the WATER TEMPERATURE 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