169 High

Boiler Fault Code 169

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 169 appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's electronic control system has detected a communication problem with its internal combustion safety sensors, preventing it from firing up safely. (As reported on ECA FELiS FL 50 HM)

Pick your boiler brand for the 169 fix

Baxi 169 1 model ECA 169 1 model

Source

Information for the 169 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