BoilerFaultCodes 208 0 Low
Boiler Fault Code 208 0
Also written as 2080 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 208 0 appears across 1 boiler brand and 3 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 stuck in a professional test mode used by engineers to check emissions, often caused by a button being held too long or a recessed switch becoming stuck. (As reported on Worcester Bosch Greenstar 30i)
Pick your boiler brand for the 208 0 fix
Source
Information for the 208 0 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