How much does it cost to fix boiler error code Vitocrossal 300?

Typical repair cost for the boiler Vitocrossal 300 fault is £90-180 including labour.

Vitocrossal 300 Low

Boiler Fault Code Vitocrossal 300

Also written as VITOCROSSAL300 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Vitocrossal 300 appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is continuing to work but cannot accurately measure the water temperature in a specific part of your system, usually because a sensor is missing or disconnected. (As reported on Viessmann Vitopend 100)

Pick your boiler brand for the Vitocrossal 300 fix

Viessmann Vitocrossal 300 5 models

Source

Information for the Vitocrossal 300 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