What does the Ariston AA0022 fault code mean?

Your boiler has tried to fire up several times but isn't detecting a rise in water temperature, so it has shut down to prevent damage.

How much does it cost to fix Ariston error code AA0022?

Typical repair cost for the Ariston AA0022 fault is £120-350 including labour.

After three attempts at ignition, no increase in DT was detected

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

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.

7 signs repair isn't worth it anymore.