I have a GE GLD4404R00WW that came with a home I just bought.

The dishwasher wasn't cleaning things right, and I've noticed the the following two strange things:

1) The "Added Heat" option is always on. I can't seem to turn it off.

2) The dishwasher isn't filling with water on the 3rd cycle. It has plenty of water pressure, and I assume the solenoids are all OK...

The first portion of the cycle, it fills, runs for a bit, then drains.
The second portion, it does the exact same thing.
The third portion, it starts to fill (for about 0.5 seconds), then stops, and tries to run.

Of course then it is basically running dry, as well as getting quite hot inside. If I manually fill it with water, it seems OK. Also if I reset the cycle, it will fill OK twice as before... so I don't think it's an issue with the solenoid performance degrading during the cycle.

I'm thinking about replacing the "Main & Tactile Board" - since nothing else seems to make sense at this point: GE WD21X10378 Kit - Main & Tactile Board, AP4484676 | AppliancePartsPros.com

Any thoughts?

Thanks in advance!!