BoilerFaultCodesPotterton 29 Fault Code
The Potterton 29 fault code means: your boiler has detected a problem with the sensor that monitors the temperature of the water used for your radiators, causing the heating to stop working.. It appears on 5 Potterton models in our database.
Technical description: Fault on Central Heating Sensor
What causes the Potterton 29 fault?
This fault occurs when the boiler's internal computer receives an incorrect or missing signal from the sensor that monitors your radiator water temperature. The most common reason is that the sensor has physically failed due to age, though it can also be triggered by loose or corroded electrical connections between the sensor and the main control board.
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 29 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton 29 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