How much does it cost to fix Potterton error code 24?

Typical repair cost for the Potterton 24 fault is £90-160 including labour.

24 High

Potterton 24 Fault Code

Q: What does the Potterton 24 fault code mean?

Your boiler has detected a problem with its internal temperature sensors, meaning it cannot accurately measure how hot the water is and has shut down as a safety precaution.

The Potterton 24 fault code means: your boiler has detected a problem with its internal temperature sensors, meaning it cannot accurately measure how hot the water is and has shut down as a safety precaution.. It appears on 5 Potterton models in our database.

Technical description: Fault on Temperature Sensor

What causes the Potterton 24 fault?

This fault occurs when the boiler's control board loses communication with the temperature sensor or receives an unrealistic reading. The most common reason is that the internal thermistor has physically degraded over time or developed a short circuit, preventing the unit from monitoring heat levels safely. In some cases, it can also be caused by loose or damaged wiring connecting the sensor to the main circuit board.

Typical repair cost £90-160 (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 24 fault code

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

Source

Potterton 24 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