Boiler Fault Code SWITCHED LIVE

Also written as SWITCHEDLIVE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code SWITCHED LIVE appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is not receiving the electrical signal from your thermostat or timer telling it to turn on. (As reported on Potterton Promax 15 & 24)