How much does it cost to fix boiler error code E28?

Typical repair cost for the boiler E28 fault is £120-200 including labour.

E28 High

Boiler Fault Code E28

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E28 appears across 6 boiler brands and 31 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is currently unable to sense the temperature of your hot water, so it has stopped producing it to prevent potential overheating. (As reported on Baxi Platinum Combi HE)

Pick your boiler brand for the E28 fix

Baxi E28 9 models Biasi E28 2 models Keston E28 1 model Main E28 7 models Potterton E28 11 models Vokera E28 1 model

Source

Information for the E28 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