BoilerFaultCodes E047 Emergency
Boiler Fault Code E047
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E047 appears across 1 boiler brand and 6 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 of the exhaust gases leaving the unit is higher than it should be, so it has shut down to prevent any damage. (As reported on Navien NCM 1130HH)
Pick your boiler brand for the E047 fix
Source
Information for the E047 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