What does the Chaffoteaux 30-80 (M, M, L, M, M, M) fault code mean?

Your boiler is mistakenly detecting a flame when it shouldn't be, which is a safety lockout preventing it from firing up.

How much does it cost to fix Chaffoteaux error code 30-80 (M, M, L, M, M, M)?

Typical repair cost for the Chaffoteaux 30-80 (M, M, L, M, M, M) fault is £150-250 including labour.

Fire detection without burner working

This is a emergency 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.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.