50°C neon flashing High

Potterton 50°C neon flashing Fault Code

Also written as 50CNEONFLASHING — same fault.

The Potterton 50°C neon flashing fault code means: your boiler has detected a fault and stopped working, and it requires a manual reset to attempt to clear the error.. 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: Go to section ‘J’ - Turn the selector to reset. If regular resetting is required or appliance still does not operate investigation is necessary.
Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Potterton models that show the 50°C neon flashing fault code

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

Source

Potterton 50°C 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