Greetings fellow trouble shooters and trouble makers. I have a tale of woe and frustration to tell. It begins with a Frigidaire Professional DW, although it should be called a Frigidaire Amateur DW. Or another name would be Frigidaire Professional Frustrating dishwasher. A service manual for this nice looking piece of crap is not available; there is a tech sheet but it is pretty sketchy IMHO.
It is Model FPHD2491KF0. This sleek looking item has the touch panel buttons “hidden” on the top of the door. Nothing wrong with that, of course, as long as it functions properly. Which it doesn’t. But what else is new?
The problem is, when you try to run any of the wash cycles except the Quick Rinse cycle, then press start, the DW will fill properly but then stop. It is deadly silent. The room is quiet except for the soft rustle of the wind through the trees outside. The motor does not turn on. Then, when you have had enough of the silence, and just can’t take it anymore, the impatient repairman presses Start/Cancel to make it drain. This task our Frigidaire performs beautifully, as if it didn’t have a care in the world and knew nothing of the repairman’s aggravation.. I tell you, it can’t wash but it can drain with the best of them.
But just for the fun of it, sometimes in the Quick Rinse cycle, it will fill AND the wash motor will work fine. Why does it do this? Why is this cycle different than all other cycles? (Could the turbidity sensor have something to do with this?)
On all the wash cycles that I tried there is 120 VAC to the control board, but there is no voltage going from the board to the motor except on Quick Rinse.
The motor is good; it runs with 120VAC directly applied with a test cord.
The control panel buttons seem responsive; the green LEDs light up and go off when you press the buttons.
So of course I replaced the two control boards and this did not fix it. There was an unpleasant moment but it passed.
I could spend more money and try replacing the control panel (touch pad). But I had my doubts about that because the buttons on the touch pad seem to work when I press them. With one big exception: except that they are totally dead when I try to enter water/service test. This test will not start. It is dead—no lights, sounds, nothing.
Does it need a new touch pad?
Is it possible that the turbidity sensor or the NTC or another part is telling the control to fill but not to run the motor? I have spent hours and hours on this one, not to mention $$. Please, any help would be gratefully accepted. I would like to at least break even on this and learn whatever deeper mysteries might be revealed to me by the sage commenters on this forum.
PS: I hope I don’t come off sounding like a pompous ass; I just didn’t want to make this boring—I really need some help here. Thank you.
Link to tech sheet file below.