15 Emergency

Potterton 15 Fault Code

The Potterton 15 fault code means: your boiler has detected an issue with the internal component that controls the gas supply, meaning it cannot safely ignite to heat your water or home.. It appears on 12 Potterton models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Gas Valve Fault
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 15 fault code

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

Source

Potterton 15 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 31 August 2026