RL2/RLX (not energised) High

Boiler Fault Code RL2/RLX (not energised)

Also written as RL2RLXNOTENERGISED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code RL2/RLX (not energised) appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected a loose or disconnected internal electrical wire, which is preventing it from safely communicating with its internal components. (As reported on Ferroli Arean)

Pick your boiler brand for the RL2/RLX (not energised) fix

Ferroli RL2/RLX (not energised) 2 models

Source

Information for the RL2/RLX (not energised) 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