What does the Chaffoteaux 6.i fault code mean?

Your boiler has stopped working because there isn't enough water moving through the system to safely light the burner.

How much does it cost to fix Chaffoteaux error code 6.i?

Typical repair cost for the Chaffoteaux 6.i fault is £80-250 including labour.

Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.

No main burner - Lack of water flow

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

Six most common causes of dropping pressure.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.