Boiler Fault Code 110 R

Also written as 110R — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026

Fault code 110 R 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 has detected that it is overheating and has shut itself down to prevent damage, likely because the water inside isn't circulating properly. (As reported on Baxi EcoBlue System)