BoilerFaultCodesPotterton Neon illuminated (Burner) Fault Code
Also written as NEONILLUMINATEDBURNER — same fault.
The Potterton Neon illuminated (Burner) fault code means: your boiler is trying to ignite the gas to create a flame, but for some reason, the burner is failing to light or stay lit.. It appears on 1 Potterton model in our database.
Technical description: Gas at burner. If burner does not light, go to section ‘F’.
What causes the Potterton Neon illuminated (Burner) fault?
This fault occurs when the boiler's control system attempts to start the heating process but cannot verify that a safe, stable flame has been established. The most common reasons are a lack of gas reaching the burner, dirty or worn electrodes that can't create a spark, or a failing internal component that cannot sense the flame correctly.
DIY fix possible
Check if other gas appliances, like a cooker, are working to ensure gas supply is activeCheck that your gas pre-payment meter (if applicable) has creditPress the reset button on the front control panel
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Potterton models that show the Neon illuminated (Burner) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton Neon illuminated (Burner) 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