What does the Ariston AA1199 fault code mean?

Your boiler is still detecting a flame even after it has tried to shut off the gas, which is a significant safety concern.

How much does it cost to fix Ariston error code AA1199?

Typical repair cost for the Ariston AA1199 fault is £180-450 including labour.

Manufacturer manual

The flame was detected after the gas valve had closed

Shared across the range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

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

Boiler cover options

A cover plan would handle faults like AA1199: no call-out fees, no surprise bills.

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

Older boilers — thermocouple, draught, gas supply.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.