Your boiler's computer has lost the ability to identify itself and requires a professional reset or part replacement.

Boiler identification module or device electronics faulty

What causes this fault?

This fault occurs when the boiler's main control board loses communication with a specialized memory chip that tells the unit exactly which model and power rating it is. It is typically caused by a loose connection, a power surge that has corrupted the internal data, or a hardware failure within the identification module itself.