What does the Worcester Bosch 277 E9 fault code mean?

Your boiler has detected that it has become dangerously hot and has shut itself down to prevent damage or safety hazards.

How much does it cost to fix Worcester Bosch error code 277 E9?

Typical repair cost for the Worcester Bosch 277 E9 fault is £150-300 including labour.

Safety sensor temperature exceeded 95°

This is a emergency 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.