J2E High
Boiler Fault Code J2E
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code J2E 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 electrical cooling system has become too hot and has shut down to prevent permanent damage. (As reported on Ideal HP290)
Pick your boiler brand for the J2E fix
Source
Information for the J2E 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