High
LED2 on on Ferroli Modena HE

Your boiler has detected a safety issue or failed to start, so it has automatically turned itself off to prevent any potential danger.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Boiler shut down warning / Lockout (e.g. safety thermostat activated or ignition failure)

Engineer required

This is a high 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

A01View →A02View →

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