What does the Worcester Bosch 10 fault code mean?

Your boiler has automatically shut down because the water inside it has become dangerously hot and exceeded its safe operating temperature.

How much does it cost to fix Worcester Bosch error code 10?

Typical repair cost for the Worcester Bosch 10 fault is £150-300 including labour.

Locking Flow temperature too high - Primary flow sensor overheated. Supply sensor exceeded 110°C

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.

Almost always a stuck diverter valve on combis.

Sludge build-up — needs flushing, not bleeding.