Reset Neon (Flashing) High

Potterton Reset Neon (Flashing) Fault Code

Also written as RESETNEONFLASHING — same fault.

The Potterton Reset Neon (Flashing) fault code means: your boiler has tried to fire up but could not light the flame, causing it to shut down for safety.. It appears on 1 Potterton model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Indicates that the burner has failed to light. To reset the boiler turn the selector switch to the reset position.

What causes the Potterton Reset Neon (Flashing) fault?

This fault occurs when the boiler's internal sensor fails to detect a flame after several attempts to start. The most common reasons are a lack of gas reaching the burner, a faulty spark that cannot ignite the gas, or a sensor that is too dirty to see the flame that has been lit.

This issue is more frequent during extreme cold spells, as external gas meters or pipes can occasionally freeze and restrict the gas flow required for ignition.

Typical repair cost £90-280 (including labour)

DIY fix possible

Check that your gas supply is turned on at the meterTurn the control knob to the 'Reset' position for five secondsSlowly release the knob back to the 'On' position and wait for the boiler to restart

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Potterton models that show the Reset Neon (Flashing) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Potterton Reset 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 27 April 2026