Boiler Fault Code 1 07

Also written as 107 — same fault.

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

Fault code 1 07 appears across 1 boiler brand and 14 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 enough water through your heating system, usually because there is trapped air, a blockage, or the system pressure is too low. (As reported on Ariston Clas One)