Your boiler's control panel and the main internal computer are having trouble talking to each other, meaning the display might not work correctly or respond to your settings.

Control mode - Faulty operating interface

What causes this fault?

This fault occurs when the data link between the boiler's front display panel and the internal main circuit board is interrupted or corrupted. It is usually caused by a loose internal connection cable, moisture ingress affecting the buttons, or a component failure within the digital interface itself.