What does the Worcester Bosch E9 224 fault code mean?

Your boiler has switched itself off because internal sensors have detected that the water or exhaust gases have become dangerously hot.

How much does it cost to fix Worcester Bosch error code E9 224?

Typical repair cost for the Worcester Bosch E9 224 fault is £120-280 including labour.

Check if your radiator valves are fully open to allow water to circulate

Max thermostat activated – flue gas thermostat overheat

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.