The tests carried out prove the main PCB is faulty causing no display but the appliance may otherwise be functioning correctly as the LED's are flashing.
The display is passive on this boiler, so the appliance may have an additional fault.
Please select whether you wish to replace the main PCB or if you wish to continue fault finding to diagnose an additional problem with the appliance.
Appliance has additional fault - Continue Diagnosis
Appliance working correctly other than no display - Replace PCB
Note:
If you continue to fault find then remember a PCB will also be
required along with any other parts fitted (Part Number J25-449).
The display is passive on this boiler, so the appliance may have an additional fault.
Please select whether you wish to replace the main PCB or if you wish to continue fault finding to diagnose an additional problem with the appliance.
Appliance has additional fault - Continue Diagnosis
Appliance working correctly other than no display - Replace PCB
Note:
If you continue to fault find then remember a PCB will also be
required along with any other parts fitted (Part Number J25-449).