BoilerFaultCodesPotterton E07 Fault Code
The Potterton E07 fault code means: your boiler has detected an issue with a safety sensor that monitors the temperature of the unit’s casing, causing the system to stop working for safety.. It appears on 3 Potterton models in our database.
Technical description: Case temperature sensor fault (open or short circuit)
What causes the Potterton E07 fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that prevents the outer casing from overheating. It is usually caused by the sensor failing due to age, or a loose electrical connection within the wiring harness that has been shaken or worn over time. For safety, the boiler shuts down immediately because it can no longer verify that the unit is operating at a safe external temperature.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Potterton models that show the E07 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E07 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