High
A 18 on Ariston Euro Prisma 24

Your boiler is failing to stay lit because the flame keeps going out shortly after it starts.

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

3 "flames in progress" disappearances in 1 operating cycle

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

A 11View →A 12View →

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