What does the Chaffoteaux 30 40 fault code mean?

Your boiler has detected an issue with the ignition process and has shut down as a precaution to prevent unburnt gas from building up.

How much does it cost to fix Chaffoteaux error code 30 40?

Typical repair cost for the Chaffoteaux 30 40 fault is £120-250 including labour.

Misfiring safety feature

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

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.