BoilerFaultCodes 12-67 High
Boiler Fault Code 12-67
Also written as 1267 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 12-67 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's flame sensor is detecting an unusual reading that is outside of its normal operating range, which has caused the system to stop as a safety precaution. (As reported on Daikin D2CND)
Pick your boiler brand for the 12-67 fix
Source
Information for the 12-67 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