How to Troubleshoot & Replace Ge AP7215773 / WD21X24901C Dishwasher Main Control Board

I first replaced the door switch. That did not fix the issue. Then the service control board. Problem solved. 

Replaced the motherboard. Found a video on Youtube with step by step instructions. It was very easy and the repair worked! The dishwasher was beeping as if the door was open, but it wasn't. The error code indicated 815, which indicates a bad motherboard/control panel. 

GE dishwasher acted like the door was open when in fact it was not so it would go no further or start. I checked the door switch and found it to be functional. I checked the voltage coming to the switch and found there to be 14 volts coming to both sides indicating the power supply to the switch was good. That left only the main control board to be defective. I ordered a new one from APP and two days later I had the part in hand and it took about an hour start to finish to get my dishwasher back to perfect running condition. Thank you Appliance Parts Pros. This is the second time you have saved my bacon. I hope I never have to come back but if I do..... 

Ordered new motherboard through AppliancePartsPros.com and replaced it. Simple and inexpensive. 

Replaced the latch and hook and it works fine. 

Based upon troubleshooting recommendations I found online, I put the dishwasher into Consumer Error Mode by pressing and holding the Select Cycle and Start buttons for 5 seconds with the door closed. The LEDs on the control panel started flashing, which indicates the dishwasher thinks the door is open when it isn't. That points to a problem with the door switch or control board. The control board was the culprit in most of the online reports I found, and it appeared to be easier to replace than the switch, so I decided to try it first. I ordered a WD21X24901 control board and replaced it using the procedures in this video: http://www.anrdoezrs.net/links/8373913/type/dlg/https://www.repairclinic.com/Repair-Library/Part-Replacement/2091/Ge-Dishwasher-Main-Control-Board-Replacement-Wd21x20720 Note the video is for a slightly different model dishwasher, but the configurations were the same. The control board was fairly easy to replace. I had a little difficulty disconnecting the electrical connectors on the control board, but just kept gently wiggling them until they came loose. After I replaced the control board I held my breath, pressed the start button, and the dishwasher started up! 

The new control board took about 5 minutes to install and it worked instantly. Previously the dishwasher would not start a cycle, and the old control board did not light up when inspected. 

Replace the control board, took about 15-20 minutes. 

Ordered board and changed - pretty straight forward 

Replaced the main circuit panel.