Hello John. Before you do anything else, unplug the unit at the wall outlet an leave it unplugged for 10 minutes. During this time I would plug a light or something in the outlet to insure power is there. After the 10 minutes, plug the unit back in and see if the microprocessor resets and goes back into operation. This works sometimes when the microprocessor comes to a point of stalemate and needs rebooting. (This seems to occur most often after a brownout or power outage). If this produces no positive results, it's time to check for power at the main control which the manufacturer is calling the switch board [AP4695205]. This is probably where the problem is but without testing, this is speculation. We need to know if power is getting to this board (it is located behind the kick panel in a box mounted under the front of the unit. when you look under the unit with the kick panel removed, it is mounted to the bottom of the unit). You can check this with a voltage indicator [AP5589569]. Let me know what you find out and I will help you as much as possible.