How much does it cost to fix boiler error code L5E?

Typical repair cost for the boiler L5E fault is £250-800 including labour.

L5E High

Boiler Fault Code L5E

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code L5E 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 heat pump’s main engine is struggling to pull enough power to start up correctly. (As reported on Ideal HP290)

Pick your boiler brand for the L5E fix

Ideal L5E 1 model

Source

Information for the L5E 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