How much does it cost to fix boiler error code OVERHEAT HIGH LIMIT?

Typical repair cost for the boiler OVERHEAT HIGH LIMIT fault is £120-350 including labour.

OVERHEAT HIGH LIMIT High

Boiler Fault Code OVERHEAT HIGH LIMIT

Also written as OVERHEATHIGHLIMIT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code OVERHEAT HIGH LIMIT 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 switched itself off because it has become too hot and needs time to cool down safely. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the OVERHEAT HIGH LIMIT fix

Johnson Starley OVERHEAT HIGH LIMIT 1 model

Source

Information for the OVERHEAT HIGH LIMIT 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