BoilerFaultCodesPro 10 Fault Code
The Pro 10 fault code means: your boiler has failed to ignite, which is usually caused by an issue with the gas flow or the air exhaust system.. It appears on 1 Pro model in our database.
Technical description: Check gas supply, check flue system, check polarity.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a prepaid gas meter, ensure you have sufficient creditVerify that other gas appliances in your home, such as a hob, are working correctlyPress the reset button once for 5 seconds
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Pro models that show the 10 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Pro 10 fault code information on this page is sourced and cross-checked against the official Pro service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026