How much does it cost to fix Potterton error code neon flashing (Section I/M)?

Typical repair cost for the Potterton neon flashing (Section I/M) fault is £120-250 including labour.

neon flashing (Section I/M) High

Potterton neon flashing (Section I/M) Fault Code

Q: What does the Potterton neon flashing (Section I/M) fault code mean?

Your boiler is failing to stay lit because it cannot properly detect the flame or is struggling to drain away waste water, causing it to shut down for safety.

Also written as NEONFLASHINGSECTIONIM — same fault.

The Potterton neon flashing (Section I/M) fault code means: your boiler is failing to stay lit because it cannot properly detect the flame or is struggling to drain away waste water, causing it to shut down for safety.. It appears on 1 Potterton model in our database.

Technical description: Flame sensing fault / Burner extinguishes after 10 seconds / Condensate drain blockage

Typical repair cost £120-250 (including labour)

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 neon flashing (Section I/M) fault code

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

Performa 30 HE Repair: £120-250

Source

Potterton neon flashing (Section I/M) 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