Communication fault - No communication with the PCB

What does Communication fault (display/PCB) mean?

The boiler display shows a communication fault, meaning there is no communication between the display unit and the main Printed Circuit Board (PCB) in the electronics box.

• Communication fault between the display and the main PCB.

Click steps to track your progress.

1. 1

   Press the reset button on the boiler display up to three times to try and clear the fault.

2. 2

   Contact customer service. This indicates a critical internal communication issue requiring a technician.

3. 3

   A qualified technician will need to inspect the connections between the display and the PCB in the electronics box.