What does the Chaffoteaux 5.vii fault code mean?

Your boiler is struggling to detect the water flow needed to heat your taps, causing it to rapidly turn on and off while trying to start.

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

Typical repair cost for the Chaffoteaux 5.vii fault is £150-250 including labour.

Hot water does not operate over temperature range - Pressure switch hunting

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.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.