What does the Worcester Bosch E9 fault code mean?

Your boiler has overheated because the internal temperature reached a safety limit, causing the system to shut down to prevent damage.

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

Typical repair cost for the Worcester Bosch E9 fault is £120-280 including labour.

Check that your heating system pressure gauge is between 1 and 1.5 bar

Safety temperature limiter in central heating (CH) flow has tripped the system pressure or safety temperature limiter needs checking

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.

Work through these before the call-out.

Lockout fault with a reset-needed pattern.