How much does it cost to fix boiler error code J5E?

Typical repair cost for the boiler J5E fault is £350-1,200 including labour.

J5E High

Boiler Fault Code J5E

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code J5E 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 has encountered a problem and has stopped running to protect the system. (As reported on Ideal HP290)

Pick your boiler brand for the J5E fix

Ideal J5E 1 model

Source

Information for the J5E 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