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

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

E01 540 Emergency

Ideal E01 540 Fault Code

Q: What does the Ideal E01 540 fault code mean?

Your boiler has detected an issue with the internal metal plate that manages airflow, which may prevent the unit from venting exhaust gases safely.

Also written as E01540 — same fault.

The Ideal E01 540 fault code means: your boiler has detected an issue with the internal metal plate that manages airflow, which may prevent the unit from venting exhaust gases safely.. It appears on 1 Ideal model in our database.

Technical description: Flue baffle CF 3/100

Typical repair cost £150-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ideal models that show the E01 540 fault code

Click a model for the full fault code list and model-specific repair notes.

Mexico CF3 40 & 50 Repair: £150-250

Source

Ideal E01 540 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

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