BoilerFaultCodes LC1 High
Boiler Fault Code LC1
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code LC1 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 its internal computer board is having trouble communicating with the motor that runs the system. (As reported on Ideal HP290)
Pick your boiler brand for the LC1 fix
Source
Information for the LC1 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