BoilerFaultCodesTechnical description
Short circuit in the flow temperature sensor contacts
What causes this fault?
This fault occurs when the sensor responsible for measuring the temperature of the water leaving the boiler fails to send a clear signal to the control board. It is typically caused by the internal electrical contacts within the sensor wearing out or moisture causing a connection to fail, meaning the boiler can no longer operate safely. In some cases, the wiring connecting the sensor to the main computer may have become loose or damaged over time.
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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