How much does it cost to fix Ideal error code 65 L....8.....?

Typical repair cost for the Ideal 65 L....8..... fault is £280-450 including labour.

65 L....8..... High

Ideal 65 L....8..... Fault Code

Q: What does the Ideal 65 L....8..... fault code mean?

Your boiler has detected a problem with the fan that safely removes exhaust gases, meaning it will not fire up for heating or hot water until it is repaired.

Also written as 65L8 — same fault.

The Ideal 65 L....8..... fault code means: your boiler has detected a problem with the fan that safely removes exhaust gases, meaning it will not fire up for heating or hot water until it is repaired.. It appears on 2 Ideal models in our database.

Technical description: FAN ERROR

Typical repair cost £280-450 (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 65 L....8..... fault code

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

Source

Ideal 65 L....8..... 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