Fan Purge Low

Potterton Fan Purge Fault Code

Also written as FANPURGE — same fault.

The Potterton Fan Purge fault code means: your boiler is currently running a process to clear any leftover gases from the burn chamber before it attempts to light, which is a normal safety routine.. It appears on 2 Potterton models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Control Status: Fan Purge

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 Purge fault code

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

Source

Potterton Fan Purge 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