BoilerFaultCodesPotterton RED NEON Fault Code
Also written as REDNEON — same fault.
The Potterton RED NEON fault code means: your boiler has shut down completely for safety reasons and will not provide heating or hot water until it is manually reset or repaired.. It appears on 3 Potterton models in our database.
Technical description: Safety LOCK-OUT condition
What causes the Potterton RED NEON fault?
This fault occurs when the boiler's control system detects a failure in the ignition process or a safety breach, leading to an immediate shutdown. The most common reasons include the burner failing to light, a loss of flame signal during operation, or an internal component like the fan or gas valve not responding correctly. It is a protective measure designed to prevent the boiler from running in an unsafe condition.
DIY fix possible
Locate the reset button on the front control panel.Press and hold the reset button for at least two seconds.Wait to see if the green light replaces the red light and the boiler fires up.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Potterton models that show the RED NEON fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton RED NEON 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