How much does it cost to fix Potterton error code Neon 28?

Typical repair cost for the Potterton Neon 28 fault is £120-200 including labour.

Neon 28 Medium

Potterton Neon 28 Fault Code

Q: What does the Potterton Neon 28 fault code mean?

Your boiler is struggling to detect the temperature of the water being heated, which means it will likely stop providing hot water until the faulty sensor is replaced.

Also written as NEON28 — same fault.

The Potterton Neon 28 fault code means: your boiler is struggling to detect the temperature of the water being heated, which means it will likely stop providing hot water until the faulty sensor is replaced.. It appears on 1 Potterton model in our database.

Technical description: Fault on Hot Water Sensor

Typical repair cost £120-200 (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 28 fault code

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

Performa 24 Repair: £120-200

Source

Potterton Neon 28 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