How much does it cost to fix boiler error code 0E34?

Typical repair cost for the boiler 0E34 fault is £120-250 including labour.

0E34 High

Boiler Fault Code 0E34

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 0E34 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling because the electricity supply it is receiving is weaker than it should be. (As reported on Alpha Pro Tec Plus)

Pick your boiler brand for the 0E34 fix

Alpha 0E34 3 models

Source

Information for the 0E34 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