Fig. 16 Emergency
Boiler Fault Code Fig. 16
Also written as FIG16 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fig. 16 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is releasing excess water outside through a safety pipe because the pressure inside the system has become too high. (As reported on Chaffoteaux Duo)
Pick your boiler brand for the Fig. 16 fix
Source
Information for the Fig. 16 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