Your boiler's internal computer has encountered a critical error and can no longer communicate with the rest of the system.

Boiler electronics faulty

What causes this fault?

This fault occurs when the boiler's main control board suffers a hardware failure and stops sending data to other internal components. It is often caused by a sudden electrical surge or an internal short circuit that has damaged the delicate microchips on the circuit board. Without these clear signals, the boiler cannot safely coordinate the ignition and heating process.