How much does it cost to fix boiler error code Fault 50?

Typical repair cost for the boiler Fault 50 fault is £120-250 including labour.

Fault 50 Medium

Boiler Fault Code Fault 50

Also written as FAULT50 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Fault 50 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your solar heating system has stopped circulating fluid properly, likely due to a blockage or trapped air bubbles within the pipes. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the Fault 50 fix

Worcester Bosch Fault 50 1 model

Source

Information for the Fault 50 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 27 April 2026