What does the Chaffoteaux 30 fault code mean?

Your boiler has stopped working because water is not moving around the internal system efficiently enough to prevent it from overheating.

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

Typical repair cost for the Chaffoteaux 30 fault is £150-£350 including labour.

Check that the boiler pressure is between 1.0 and 1.5 bar on the gauge

Primary water circulation defect

This is a high 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.

Lockout fault with a reset-needed pattern.

Sludge build-up — needs flushing, not bleeding.