Justin for Model Number GDF520PSF4SS I have a G.E. Dishwasher model number GDF520PSF4SS. The dishwasher is not drying the dishes.I checked out the heating element with a meter and it seems to be good. pulled wires off and checked it with a meter and nothing is open on it showing a break in element or bad element. Could you help me where to go next, is it the main board I need to check or is it the display board I would need to check? I know I need to check for voltage feeding the heating element when it calls for drying to see if I have it but not sure which one of the boards would be putting out the voltage. Any help with this problem would be so greatly appreciated. Thanks for your time.
Answer Justin, with the power supply off, the machine control WD21X22276 would need to be accessed for testing. While the wires are connected to the heater, the wire connection J702 would need to be tested from the violet wire to the red and white wire for 23.4 Ohms. If the resistance shows open, but was showing as good at the heater, the TCO on the AC wire harness and pump kit WD49X23778 has failed. If the reading is good when testing at these two wires, the machine control would be the cause of failure. Read More... Answered by AppliancePartsPros.com | Monday, October 3, 2022