Hotpoint WD420 washer dryer lights 1 and 2 flashing

[Lawrencer]

My Mum's machine won't fill or start and lights 1 and 2 are flashing (as well as the on/off light flashing rapidly).

Another forum post from Rocks1 (thanks) says that this means "communication error". Is there anything that I can do about that, or is it a job for an engineer? I'm fairly comfortable with electrics but I don't want to do more harm than good by poking around where I shouldn't.

 

[rocks1]

Unplug it for 5 mins also check connections on pcb. If all that's ok pcb needed.