BoilerFaultCodes Block 67 Medium
Boiler Fault Code Block 67
Also written as BLOCK67 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Block 67 appears across 1 boiler brand and 8 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 an unusual temperature difference while it is supposed to be switched off, and it is pausing its operations until the system temperatures balance out. (As reported on Atag E Range)
Pick your boiler brand for the Block 67 fix
Source
Information for the Block 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