I’m currently getting the FH error and can’t figure out what’s going on even with all the above. In my case water is going into the washer fine, not clogged screens, checked the flow sensor by blowing in it and it seemed fine.
If after getting the code I hit the off switch and then the on switch it will start back up. Sometimes I have to do this 3-5 times, but eventually I can get the full cycle to run. Could this still be the pressure switch? Seems like if that were the problem it wouldn’t let me start back up.