What does the Worcester Bosch E9 285 fault code mean?

Your boiler has sensed that the water returning to the unit is much too hot and has shut itself down as a safety precaution.

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

Typical repair cost for the Worcester Bosch E9 285 fault is £100-220 including labour.

Check that all radiator valves are fully open

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.

7 signs repair isn't worth it anymore.