How much does it cost to fix boiler error code HC-01?

Typical repair cost for the boiler HC-01 fault is £90-160 including labour.

HC-01 Low

Boiler Fault Code HC-01

Also written as HC01 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code HC-01 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 has a fault with the thermometer that measures hot water temperature, meaning your hot water may be unreliable although your heating should still work. (As reported on Daikin D2CND)

Pick your boiler brand for the HC-01 fix

Daikin HC-01 1 model

Source

Information for the HC-01 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