BoilerFaultCodesYour boiler has detected a problem with one of its internal temperature sensors, which means it cannot accurately measure heat levels and has stopped working for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Sensor fault S0.
What causes this fault?
This fault occurs when the boiler's main internal thermometer fails to report an accurate temperature reading to the control board. It is usually caused by the sensor's internal components wearing out over time or a loose connection in the wiring that prevents the signal from getting through.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like F010 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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