How much does it cost to fix Potterton error code Fan Failure?

Typical repair cost for the Potterton Fan Failure fault is £180-350 including labour.

Fan Failure High

Potterton Fan Failure Fault Code

Q: What does the Potterton Fan Failure fault code mean?

Your boiler has detected that the internal mechanism responsible for safely venting exhaust gases is not operating correctly, so it has shut down to prevent any unsafe buildup of fumes.

Also written as FANFAILURE — same fault.

The Potterton Fan Failure fault code means: your boiler has detected that the internal mechanism responsible for safely venting exhaust gases is not operating correctly, so it has shut down to prevent any unsafe buildup of fumes.. It appears on 2 Potterton models in our database.

Technical description: The neon indicator shows a fan failure fault when lit.

Typical repair cost £180-350 (including labour)

Engineer required

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

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Potterton models that show the Fan Failure fault code

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

Source

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

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