How much does it cost to fix boiler error code LED 3 (CH)?

Typical repair cost for the boiler LED 3 (CH) fault is £0-£120 including labour.

LED 3 (CH) Medium

Boiler Fault Code LED 3 (CH)

Also written as LED3CH — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LED 3 (CH) 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 is currently waiting for a signal from your thermostat or timer to tell it that the house needs heating. (As reported on Ferroli Arean)

Pick your boiler brand for the LED 3 (CH) fix

Ferroli LED 3 (CH) 2 models

Source

Information for the LED 3 (CH) 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