High
AA0077 on Ariston Microsystem 15

Your boiler has tried to light the flame several times but has been unable to stay running, so it has safely shut itself down to prevent a gas build-up.

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

Too many failures to flame in one period during operation

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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