After repairing my flow meter, my S1 somehow got into a weird state where the steam boiler wasn't filling.
This morning I dispensed about 2 oz of hot water. Then about 4 hours later, I attempted to dispense a couple cups of hot water. Nothing but steam came out. The boiler red light was flashing indicating it was attempting to fill. I rechecked my water line and pulled a blank shot and everything seemed fine.
I unplugged my machine and let it refill. Now everything is working fine again.
Very strange. Hopefully nothing was damaged in this orphaned state it got into.