BoilerFaultCodesPotterton Neon6 Fault Code
Also written as NEON6 — same fault.
The Potterton Neon6 fault code means: your boiler has detected an issue with how it clears exhaust fumes, preventing it from firing up for safety.. It appears on 1 Potterton model in our database.
Technical description: Fault on Fan or Flue
What causes the Potterton Neon6 fault?
This fault occurs when the boiler's internal safety sensors detect that the fan isn't moving enough air to safely clear exhaust gases from the system. The most common reasons are a mechanical failure of the fan motor, a blockage in the flue pipe, or a split in the small rubber tubes that monitor air pressure.
This fault can occasionally occur during periods of high winds, as strong gusts blowing directly into the flue terminal can temporarily disrupt the airflow required for the boiler to start.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Potterton models that show the Neon6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton Neon6 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