What does the Chaffoteaux 5.vi fault code mean?

Your boiler is failing to switch on the components required to produce hot water, meaning you currently have no hot tap supply.

How much does it cost to fix Chaffoteaux error code 5.vi?

Typical repair cost for the Chaffoteaux 5.vi fault is £180-350 including labour.

Hot water does not operate over temperature range - Solenoids not operating

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.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.