Hi,Welcome to Just Answer, My name is XXXXX XXXXX forward to helping you today. lets get started.
Okay a couple of things on these could be the issue, one there is a hose that runs the side of the tub up to the water level control these troops sometimes get clogged or get clogged up in the plastic part attached to the side of the tub, the first thing you want to do is unplugged the washer and along the top of the control panel there should be four screws, remove those and tip the control panel forward and you will see the hose, it is a clear rubber hose, remove it from the water level control and blow back through it to see if it's clear at the tub end. , If it is clear your water level control has failed,this will need to be replaced, a lot of times you will find that the tube is clogged however, these machines are famous for that, you can order this at the following link, they call it the pressure switch in it runs about $28.00 at http://www.repairclinic.com/PartDetail/Pressure-Switch/WH12X10065/2205?modelNumber=S1070A5WW thanks and well wishes, Bryan
Well Mark it's not actually the control unit that's failed it's just the water level pressure switch which is the part the little tube is connected to, if you can blow through the hose that's clogged and you will need to unclog it, if you have an air compressor you can blow through the hose with that to clear the line, otherwise a very difficult to get to from the inside of the top you would need to remove the inner tub assembly to get to the part that's clogged, as far as a schematic I can't get the wiring schematic but I can give you a link to all the diagrams of your machine if that helps, click this blue link,
http://www.searspartsdirect.com/partsdirect/part-model/GE-Parts/Washer-Parts/Model-S1070A5WW/0432/0153200?pathTaken=&prst=0&shdMod=S1070A5WW thanks and well wishes, Bryan