Boiler Fault Code neon flashing (Section F)

Also written as NEONFLASHINGSECTIONF — same fault.

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

Fault code neon flashing (Section F) appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it is not receiving the gas it needs to create a flame or the internal valve responsible for controlling the fuel has failed. (As reported on Potterton Performa 30 HE)