BoilerFaultCodesIntergas F000 Fault Code
The Intergas F000 fault code means: your boiler has stopped working because one of its internal sensors is sending an incorrect signals or has disconnected, preventing it from heating your water safely.. It appears on 5 Intergas models in our database.
Technical description: Sensor defect
What causes the Intergas F000 fault?
This fault occurs when the boiler's control board loses communication with the sensors that monitor water temperature. It is usually caused by a physical break in the internal wiring or a sensor that has reached the end of its life and is sending unreadable data. Because the boiler can no longer confirm the water is at a safe temperature, it shuts down immediately as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Intergas models that show the F000 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Intergas F000 fault code information on this page is sourced and cross-checked against the official Intergas service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026