What does the Worcester Bosch E9 fault code mean?

Your boiler has switched itself off because it has detected that the water inside has become dangerously hot or the system pressure is incorrect.

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 the pressure gauge on the front of the boiler 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.

Six most common causes of dropping pressure.

Each noise points to a different fault.

Work through these before the call-out.