2 08 Low
Boiler Fault Code 2 08
Also written as 208 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2 08 appears across 3 boiler brands 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 has detected that the temperature inside the system is getting dangerously close to freezing and is running its built-in protection mode to prevent ice damage. (As reported on Ariston Clas HE R)
Pick your boiler brand for the 2 08 fix
Source
Information for the 2 08 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