BoilerFaultCodesTechnical description
Fault on Temperature Sensor
What causes this fault?
This fault occurs when the boiler's main control board stops receiving a consistent or accurate signal from the internal temperature sensor. The most common reason is that the sensor has physically failed or developed a short circuit, meaning the boiler can no longer safely monitor how hot the water is. In some cases, loose or damaged wiring between the sensor and the brain of the boiler can also trigger this shutdown.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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