How much does it cost to fix boiler error code E110?

Typical repair cost for the boiler E110 fault is £100-280 including labour.

E110 High

Boiler Fault Code E110

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E110 appears across 4 boiler brands and 34 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has likely overheated, causing a safety switch to trip and shut the system down to protect itself. (As reported on Potterton Promax Combi HE Plus)

Pick your boiler brand for the E110 fix

Baxi E110 10 models Main E110 7 models Navien E110 6 models Potterton E110 11 models

Source

Information for the E110 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 7 July 2026