How much does it cost to fix boiler error code Overheat?

Typical repair cost for the boiler Overheat fault is £90-220 including labour.

Overheat High

Boiler Fault Code Overheat

Also written as OVERHEAT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Overheat appears across 7 boiler brands and 26 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage. (As reported on Ideal Concord CXC 48 116)

Pick your boiler brand for the Overheat fix

Baxi Overheat 8 models Firebird Overheat 1 model Grant Overheat 8 models Heatline Overheat 2 models Ideal Overheat 3 models Johnson Starley Overheat 1 model Potterton Overheat 3 models

Source

Information for the Overheat 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