BoilerFaultCodes J65 High
Boiler Fault Code J65
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code J65 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 has stopped working because the internal computer that controls the motor has detected an electrical problem. (As reported on Ideal HP290)
Pick your boiler brand for the J65 fix
Source
Information for the J65 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