How much does it cost to fix Potterton error code Neon 26?

Typical repair cost for the Potterton Neon 26 fault is £150-350 including labour.

Neon 26 High

Potterton Neon 26 Fault Code

Q: What does the Potterton Neon 26 fault code mean?

Your boiler is failing to clear combustion gases properly, which means the safety system has turned the unit off to prevent a build-up of fumes.

Also written as NEON26 — same fault.

The Potterton Neon 26 fault code means: your boiler is failing to clear combustion gases properly, which means the safety system has turned the unit off to prevent a build-up of fumes.. It appears on 1 Potterton model in our database.

Technical description: Fault on Fan or Flue

Typical repair cost £150-350 (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 26 fault code

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

Performa 24 Repair: £150-350

Source

Potterton Neon 26 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