Neon 29 High

Potterton Neon 29 Fault Code

Also written as NEON29 — same fault.

The Potterton Neon 29 fault code means: your boiler has stopped producing heat because it can no longer accurately read the temperature of the water circulating through your radiators.. 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: Fault on Central Heating Sensor
Typical repair cost £120-220 (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 29 fault code

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

Source

Potterton Neon 29 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