Technical description
Reset error.
What causes this fault?
This fault happens when the boiler's internal computer fails to properly complete its reset process or becomes stuck during a startup sequence. It is often caused by a communication failure between the electronic control board and the internal wiring, or a hardware defect within the board itself. Because the boiler can no longer verify its safety checks, it stops running to prevent any erratic behavior.
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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