30 40 60 70 80 High

Boiler Fault Code 30 40 60 70 80

Also written as 3040607080 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 30 40 60 70 80 appears across 1 boiler brand 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 is struggling to move water through its system, which prevents it from heating your home or water properly. (As reported on Chaffoteaux Serelia 24 MFFI)

Pick your boiler brand for the 30 40 60 70 80 fix

Source

Information for the 30 40 60 70 80 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