How much does it cost to fix boiler error code 9C:5 to 9C:60?

Typical repair cost for the boiler 9C:5 to 9C:60 fault is £0-80 including labour.

9C:5 to 9C:60 Low

Boiler Fault Code 9C:5 to 9C:60

Also written as 9C5TO9C60 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 9C:5 to 9C:60 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 currently undergoing a pre-set maintenance test or a specialized calibration check that lasts between 5 and 60 minutes. (As reported on Viessmann Vitodens 200)

Pick your boiler brand for the 9C:5 to 9C:60 fix

Viessmann 9C:5 to 9C:60 5 models

Source

Information for the 9C:5 to 9C:60 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