80 Medium

Boiler Fault Code 80

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 80 appears across 12 boiler brands and 25 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is experiencing a temporary communication error or initialization issue that may prevent it from starting correctly. (As reported on Vokera Easi-Heat I)

Pick your boiler brand for the 80 fix

Alpha 80 4 models Atag 80 4 models Baxi 80 3 models British Gas 80 1 model Chaffoteaux 80 1 model Heatline 80 2 models Ideal 80 3 models Keston 80 2 models Sime 80 1 model Unical 80 2 models Vokera 80 1 model Worcester Bosch 80 1 model

Source

Information for the 80 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