Went on this call today,customer says the unit about 4 times has just shut itself off. No lights nothing. They unplug it and restart it. Ok no problem. Then she tells me when she restarted it the other day it just finished the cycle. Ran diagnostics,no error codes. Unit tested fine, checked operation and everything tested fine. What or how could everything shut off and then it just start right back up in the middle of the cycle that it was in. Sounded at first like a control board but now I am not so sure. Wires check good.