How much does it cost to fix Potterton error code neon flashing (1st instance)?

Typical repair cost for the Potterton neon flashing (1st instance) fault is £150-250 including labour.

neon flashing (1st instance) High

Potterton neon flashing (1st instance) Fault Code

Q: What does the Potterton neon flashing (1st instance) fault code mean?

Your boiler is failing to stay lit because it cannot detect that a flame has been successfully established.

Also written as NEONFLASHING1STINSTANCE — same fault.

The Potterton neon flashing (1st instance) fault code means: your boiler is failing to stay lit because it cannot detect that a flame has been successfully established.. It appears on 1 Potterton model in our database.

Technical description: Burner extinguishes after 10 seconds. Go to section ‘I’

Typical repair cost £150-250 (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 neon flashing (1st instance) fault code

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

Performa 28i Repair: £150-250

Source

Potterton neon flashing (1st instance) 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