What does the Chaffoteaux Excessively noisy burner fault code mean?

Your boiler is making a loud 'roaring' or vibrating noise because the fuel-air mixture is not burning smoothly inside the unit.

How much does it cost to fix Chaffoteaux error code Excessively noisy burner?

Typical repair cost for the Chaffoteaux Excessively noisy burner fault is £150-300 including labour.

Pump noise or vibrating, heat exchanger partially blocked, over-gassed, dirty burner bars, or burr on injectors.

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.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.