How much does it cost to fix boiler error code 9764?

Typical repair cost for the boiler 9764 fault is £120-200 including labour.

9764 Medium

Boiler Fault Code 9764

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 9764 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 boiler is struggling to detect or regulate the flow of cold water entering the system, which may prevent it from heating your water correctly. (As reported on Vokera Maxin)

Pick your boiler brand for the 9764 fix

Vokera 9764 1 model

Source

Information for the 9764 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