SAMSUNG WASHER FAULT

I have had this washing machine for 4 years and suddenly it started showing fault code 1E water inlet fault ,my machine is model no WF8800BPH1/XET I had the same fault code on my last Samsung washer and I changed water inlet valve it worked for a while then the board burned out and that was the end of that machine. this one is strange as it shows error E1 before filling so cannot be a water inlet fault also the machine turns on without using pause button even when I turned it off and left it plugged in i found later that it had turned itself on again showing a different code, I have had to unplug it to stop it turning itself on, have you any ideas is this another circuit board error, I think this is the last Samsung machine I will buy thanks for any advice. Carmine