How much does it cost to fix boiler error code J11?

Typical repair cost for the boiler J11 fault is £350-£900 including labour.

J11 High

Boiler Fault Code J11

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code J11 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 internal motor system is drawing too much electricity, causing the unit to shut down to protect its electrical components. (As reported on Ideal HP290)

Pick your boiler brand for the J11 fix

Ideal J11 1 model

Source

Information for the J11 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