Boiler Fault Code E01-507

Also written as E01507 — same fault.

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

Fault code E01-507 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is failing to detect a flame because the internal component responsible for controlling the fuel supply is not operating correctly. (As reported on Ideal Mexico CF3 40 & 50)