Justin for Model Number GDF520PSF4SS I am still having trouble with a G.E. Dishwasher and trying to get it to work properly.I have written two letters to your and everything your have recommended i have tested or tryed or did replace some parts and the dishwasher is still not working properly.it is not drying the dishes.First your told me to check machine control operation and ohms and resistance through wiring and element and just check element by itself.I did ohm testing at J702 connection and didnot get get full 23.4 ohms but got alittle over 21 ohms.I did the element testing by itself and it all checked out.So after that testing seemed to be okay i went ahead and replaced motor control board cause that is what you said should been problem.I also went ahead and install a new heat element also even though the old one tested good.the ohm reading was alittle low so i just did board and heat element.Ran the dishwasher and still not drying dishes,no voltage or amperage at wiring to element and does not seem like element is even coming on.Next was my error i was running dishwasher with cold water supply line instead of Hot water line and that was what you told me in my second letter that it needed to be hot water.Did it and dishwasher still not drying dishes,again still no voltage or amperage at the wiring that goes to element and element still seems to not be coming on.I am stumped,Please help.What am i missing what else can be causing my problem that i am missing and need to check out.I should be getting some voltage through wiring and drawing of amps when the dishwasher goes into heat drying cycle,Is that correct?Please help me if your can and let me know what else i need to look into that might be causing my problems,since i have followed all your instructions to this point and dishwasher is still causing me grief.Thanks so much for your time and listening and sure hope your can help me out once again.
Answer Justin, the turbidity and thermistor sensor WD21X22598 will need to be tested for resistance from pin 1 to pin 4. It should have a resistance of 10K Ohms (plus or minus 100 Ohms) at room temperature. If it does have proper resistance, and the heated dry setting was selected, it is likely that the user interface control WD21X31899 is not communicating with the machine control properly. If the resistance is not within the tolerance, it would need to be changed out. Read More... Answered by AppliancePartsPros.com | Monday, November 7, 2022