BoilerFaultCodesYour boiler has detected an electrical fault with the sensor that monitors exhaust gases, causing the system to shut down 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: Flue gas temperature sensor short circuit
What causes this fault?
This fault occurs when the internal sensor responsible for measuring the heat of your boiler's exhaust gases experiences an electrical failure. The most common reason is that the sensor's internal wiring has degraded over time or suffered a short circuit, causing the boiler to shut down to prevent potential overheating or damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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