What does the Worcester Bosch DHW light fault code mean?

Your boiler has automatically turned itself off because the hot water inside it has become dangerously hot.

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

Typical repair cost for the Worcester Bosch DHW light fault is £120-250 including labour.

Over temperature shut-down if DHW temp water temperature above 85°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.

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.