Boiler Fault Code 75°C

Also written as 75C — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code 75°C appears across 1 boiler brand and 1 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 inside is getting too hot and has shut down as a safety precaution. (As reported on Biasi Riva Compact 24S)