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

Your boiler has detected that water is not flowing through the system correctly, which is preventing it from heating your home safely.

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

Typical repair cost for the Chaffoteaux 30-80 (L, L, L, M, M, M) fault is £120-250 including labour.

Lack of water circulation.

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

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.