How much does it cost to fix boiler error code CC 800?

Typical repair cost for the boiler CC 800 fault is £90-180 including labour.

CC 800 Low

Boiler Fault Code CC 800

Also written as CC800 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code CC 800 appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has lost communication with the outdoor temperature sensor, which means the system cannot automatically adjust its efficiency based on the weather outside. (As reported on Worcester Bosch Hideaway 90)

Pick your boiler brand for the CC 800 fix

Worcester Bosch CC 800 4 models

Source

Information for the CC 800 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