What does the Ferroli A09 fault code mean?

Your boiler has detected that the exhaust gases are getting too hot, likely because the vent that carries them outside is blocked or damaged.

How much does it cost to fix Ferroli error code A09?

Typical repair cost for the Ferroli A09 fault is £120-250 including labour.

High flue gas temperature. Possible cause: Flue partially blocked or insufficient.

This is a emergency 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.