The house panel breaker isn’t tripped. There is a fuse in the shutoff box at the top of the shaft, it tests good. There is a 3A fuse in the front panel of the controller, it tests good. I’ve used a volt/ohm meter to make these reading. I did work as an electrician for 3 years. I wonder if there is a breaker as part of the Backup Power Supply? I have not opened the Controller to check on the backup power supply.