What does the Keston E30 fault code mean?

Your boiler has lost the ability to detect water flowing through the system, so it has shut down to prevent potential damage.

How much does it cost to fix Keston error code E30?

Typical repair cost for the Keston E30 fault is £150-250 including labour.

Flow sensor short circuit - check connections to flow sensor

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.