BoilerFaultCodesPotterton 80 neon flashing Fault Code
Also written as 80NEONFLASHING — same fault.
The Potterton 80 neon flashing fault code means: your boiler is starting up briefly but then failing to detect a flame, causing it to shut down for safety.. It appears on 2 Potterton models in our database.
Technical description: Burner extinguishes after 10 seconds. Go to section ‘I’.
What causes the Potterton 80 neon flashing fault?
This fault occurs when the boiler successfully lights the burner but fails to recognise that the flame is present, leading it to shut down for safety. The most common reason is a worn-out sensor electrode that can no longer send a signal to the control board, or a fault within the electronic circuitry itself. Essentially, the boiler is 'blind' to its own fire and turns the gas off to prevent an unsafe build-up.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Potterton models that show the 80 neon flashing fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton 80 neon flashing fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026