What does the Worcester Bosch E9 285 fault code mean?

Your boiler has shut down because internal components have become dangerously hot, likely due to a lack of water circulation or a component failure.

How much does it cost to fix Worcester Bosch error code E9 285?

Typical repair cost for the Worcester Bosch E9 285 fault is £120-350 including labour.

Check if your radiator valves are open to allow water to flow through the system.

The boiler return temperature sensor has measured a temperature higher than 95°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.

Sludge build-up — needs flushing, not bleeding.

Safety-critical — turn off, read this.