How much does it cost to fix boiler error code Relay 2 energised after 2 sec?

Typical repair cost for the boiler Relay 2 energised after 2 sec fault is £120-£350 including labour.

Relay 2 energised after 2 sec High

Boiler Fault Code Relay 2 energised after 2 sec

Also written as RELAY2ENERGISEDAFTER2SEC — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Relay 2 energised after 2 sec 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 boiler has detected an internal electrical or sensor error that is preventing it from starting up safely. (As reported on Ferroli Combi 77 FF Popular)

Pick your boiler brand for the Relay 2 energised after 2 sec fix

Ferroli Relay 2 energised after 2 sec 1 model

Source

Information for the Relay 2 energised after 2 sec 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