How much does it cost to fix boiler error code E01 540?

Typical repair cost for the boiler E01 540 fault is £150-250 including labour.

E01 540 Emergency

Boiler Fault Code E01 540

Also written as E01540 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E01 540 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 issue with the internal metal plate that manages airflow, which may prevent the unit from venting exhaust gases safely. (As reported on Ideal Mexico CF3 40 & 50)

Pick your boiler brand for the E01 540 fix

Ideal E01 540 1 model

Source

Information for the E01 540 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