BoilerFaultCodes J31 High
Boiler Fault Code J31
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code J31 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 control system has detected an electrical communication error or a fault with the motor drive board. (As reported on Ideal HP290)
Pick your boiler brand for the J31 fix
Source
Information for the J31 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