BoilerFaultCodesPotterton Burner on neon NOT illuminated Fault Code
Also written as BURNERONNEONNOTILLUMINATED — same fault.
The Potterton Burner on neon NOT illuminated fault code means: your boiler is not attempting to light the flame, which means you have no heating or hot water because the system has encountered an internal startup error.. It appears on 2 Potterton models in our database.
Technical description: Go to section 'F'
What causes the Potterton Burner on neon NOT illuminated fault?
This fault occurs when the boiler's internal computer tries to start the ignition process but stops because it cannot detect a flame or verify that the gas is flowing correctly. The most common reason is an aging electronic component or a sensing probe that has become worn or dirty over time. Because the system cannot guarantee it is safe to stay lit, it prevents the burner from firing entirely to protect your home.
DIY fix possible
Check if your gas credit has run out or if the gas isolation valve is openTurn the selector switch to the 'Reset' position and hold for 5 secondsCheck that the system pressure is between 1 and 1.5 bar on the pressure gauge
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Gas Safe Register →Potterton models that show the Burner on neon NOT illuminated fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton Burner on neon NOT illuminated 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 27 April 2026