BoilerFaultCodesYour boiler has detected a problem with the internal sensor that measures water temperature, causing the system to shut down as a safety precaution.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flow temperature sensor error (short circuit or open circuit)
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that monitors how hot the water is. The most common reason is that the sensor has physically failed due to age, or the electrical wiring connecting it to the main control board has become loose or damaged.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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