BoilerFaultCodes 200 O Low
Boiler Fault Code 200 O
Also written as 200O — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 200 O appears across 1 boiler brand and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is working normally and is currently heating up your radiators. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 200 O fix
Source
Information for the 200 O 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