How much does it cost to fix boiler error code Fd 231?

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

Fd 231 High

Boiler Fault Code Fd 231

Also written as FD231 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Fd 231 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected a temporary loss of electrical power or a loose internal connection, causing it to shut down for safety. (As reported on Worcester Bosch Greenstar Ri)

Pick your boiler brand for the Fd 231 fix

Worcester Bosch Fd 231 6 models

Source

Information for the Fd 231 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026