Emergency
A09 on Ferroli i25

Your boiler has detected an issue with the fuel supply component that controls the gas flow, meaning it cannot safely start your heating or hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

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

What the manual says

Manufacturer manual

Gas valve fault

From this model's manual
Verified against the Ferroli/Ferroli I25 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

A06View →A07View →

All 18 fault codes on the i25

Seeing a different code? Every code this model can display, in one place.

A01A02A03A06A15A16A23A24F07F10F11F34F35F37F43F50F51

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