What does the Vokera 4070 fault code mean?

Your boiler has shut down because it thinks the water inside is getting too hot too quickly, likely due to a circulation problem.

How much does it cost to fix Vokera error code 4070?

Typical repair cost for the Vokera 4070 fault is £120-250 including labour.

Fault flow sensor over temperature – flow sensor flow/return line probe differential alarm

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.

Sludge build-up — needs flushing, not bleeding.

7 signs repair isn't worth it anymore.