BoilerFaultCodesPotterton 10 Fault Code
The Potterton 10 fault code means: your boiler is likely struggling to provide hot water or maintain the correct temperature because its internal hot water thermometer has stopped working.. It appears on 5 Potterton models in our database.
Technical description: Fault on Hot Water Sensor
What causes the Potterton 10 fault?
This fault occurs when the boiler's internal thermometer for hot water fails to send a clear signal to the main control board. The most common reason is that the sensor has physically degraded or corroded over time, meaning the boiler can no longer tell how hot the water is and shuts down for safety. Occassionally, this can also be caused by loose or damaged wiring connecting the sensor to the rest of the unit.
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 10 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton 10 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
- Potterton Performa 24 manual (PDF)
- Potterton Performa 24i HE manual (PDF)
- Potterton Performa 28i manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026