I replaced the entire control panel about 3 weeks ago. It was working like new until today. Now there is water at the bottom and the control panel is not responding to any input. The house fuse is fine. Do you think that it’s the internal fuse or something else?
Here are your parts
Model GU1500XTLB2
Here is the tech sheet
https://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208537797.pdf
The fuse would be at the top of the list.
Check it with meter.
If it is blown I would also check the various parts at the plugs to the control board to see if you can find a cause. Remove the plug from the board and check pin to pin.
If you replaced the board for this same problem, could be something is blowing the boards on you.