BoilerFaultCodesYour boiler has detected a problem with the sensor that monitors the temperature of the water used for your radiators, causing the heating to stop working.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fault on Central Heating Sensor
What causes this fault?
This fault occurs when the boiler's internal computer receives an incorrect or missing signal from the sensor that monitors your radiator water temperature. The most common reason is that the sensor has physically failed due to age, though it can also be triggered by loose or corroded electrical connections between the sensor and the main control board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 29 — no call-out fees, no surprises.
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