Please help.... Washer has been constantly beeping for 3 days now. I have unplugged for time intervals from 1 minute to 1 day. I found the service sheet in the back and accessed the codes. I am getting an E4 and E7 error message flashing. At times the beeping slows or even stops for a few minutes and then starts up again. I can get it to load some water and drain it when I hit the right buttons but some of the buttons revert back to "default" values. for example if I choose cold, it may switch itself to hot or something other than what I picked. I think its the control board but hate to spend $150 on a guess.