BoilerFaultCodesTechnical description
Failure regarding to control panel reference temperature.
What causes this fault?
This fault occurs when the boiler's main control board loses the ability to calibrate itself against its own internal reference temperature. It is usually caused by a physical failure of the electronic components on the circuit board or a communication error within the control panel assembly. Because the boiler can no longer verify it is reading temperatures accurately, it shuts down as a safety precaution.
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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