Boiler Fault Code DOMIcondens HE 26 C

Also written as DOMICONDENSHE26C — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code DOMIcondens HE 26 C appears across 1 boiler brand and 4 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 exhaust gases are getting too hot, causing it to shut down for safety. (As reported on Ferroli Domi Compact)