What does the Worcester Bosch Fd / 231 fault code mean?

Your boiler has lost power while it was already trying to fix a separate error, so it is stuck in a confused state.

How much does it cost to fix Worcester Bosch error code Fd / 231?

Typical repair cost for the Worcester Bosch Fd / 231 fault is £120-250 including labour.

The power has been interrupted during a lockout

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Work through these before the call-out.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.