F70 & F71 fault codes

I have been receiving F70 & F71 faults. I ordered a user interface. I replaced it and my washer worked for about 4 loads without receiving the codes. I received them again and purchased the CCU and replaced that. I am still receiving both faults. I cleaned the ends of the wires with alcohol as suggested in other posts and made sure that all of the ends were secured. Anymore suggestions on what could be wrong with it?