How much does it cost to fix boiler error code 273?

Typical repair cost for the boiler 273 fault is £150-300 including labour.

273 Medium

Boiler Fault Code 273

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code 273 appears across 2 boiler brands and 9 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that the internal fan was running when it should have been switched off, suggesting a potential communication issue with the control board. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the 273 fix

Navien 273 1 model Worcester Bosch 273 8 models

Source

Information for the 273 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 31 August 2026