Tests carried out have shown a fault with the PCB is causing the Power On LED to not illuminate.
The lights on this appliance are passive and do not affect the operation of the boiler.
Please select whether you wish to continue fault finding or if you wish to replace the PCB.
Continue with diagnosis (recommended)
(choose different option to LED does not illuminate)
Replace PCB for faulty LED
Note:
If you choose to continue with your diagnosis, do NOT forget to order the PCB to rectify the LED fault.