How much does it cost to fix boiler error code LED 3 lit?

Typical repair cost for the boiler LED 3 lit fault is £180-350 including labour.

LED 3 lit High

Boiler Fault Code LED 3 lit

Also written as LED3LIT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LED 3 lit 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 is trying to start its cycle but has detected an electrical issue that is preventing the internal fan from running safely. (As reported on Ideal Mexico Super 40ff - 80ff)

Pick your boiler brand for the LED 3 lit fix

Ideal LED 3 lit 1 model

Source

Information for the LED 3 lit 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