114 Low

Boiler Fault Code 114

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 114 appears across 5 boiler brands and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has lost its connection to the outside temperature sensor, which means it cannot automatically adjust its heating levels based on the weather outdoors. (As reported on Atag iS System)

Pick your boiler brand for the 114 fix

Alpha 114 2 models Atag 114 2 models Ferroli 114 1 model Navien 114 1 model Worcester Bosch 114 1 model

Source

Information for the 114 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