How to Troubleshoot & Replace Whirlpool AP6021413 / WPW10438750 Electronic Control Board

I ordered this part from Appliance Parts Pros on a Tue. afternoon around 2:30 pm central time. It arrived at my house the next day around 4:00 pm. just using standard shipping. I installed the part and my oven works. I just pulled the oven out and rested the front part of it on a stool far enough to have access to the top panel. When replacing the board, I took out one connection at a time and plugged it into the new panel. Oh, I did turn off the breaker to the oven before doing anything and double checked to make sure it was off. The hard part was removing the trip pieces around the oven. I would highly recommend Appliance Parts Pros. for your service. 

Researching the error code on the internet led me to think I had a faulty control board. I cleaned the ribbon as suggested and it worked for a day before giving the error code again. After looking at the part during the first repair attempt, I realized the control board can easily be switched out. I ordered a replacement control board from AppliancePartsPros.com and replaced it. After cutting power and removing the side trim to the oven, I unscrewed the keypad control. Then I carefully pulled out the connection plugs, taking note of the location of the connection on the new control board, and kept the sister board aside. I connected the new board and the sister board and it worked! There was an issue of getting one connection to fit next to another part, but I eventually got it connected. Other than that it was an easy fix. 

Replaced the electronic control board. Was relatively easy once I figured out how to get into where the control panel was located; videos supplied were for a different model. Basically, unplug connectors, pull 4 screws, replace board and 4 screws then replug in connectors. I would suggest taking pics of all connectors before taking apart to make sure all get put into the correct place (8-9 total connectors). The wires are color coded but several plugs are the same size so it will make putting back together a faster task. Most difficulty of this replacement is removing the wall oven from the cabinet. I pulled mine out only far enough to gain access to the back of the touch pad and supported it with a 5 gal. bucket. Also, make sure to keep yourself grounded by staying in contact with a metal portion of the oven to prevent static damaging the new control board. 

Replaced the oven control board that took about an hour overall 

Ordered main control board and top blower. parts arrived as expected and well packaged. replaced main control board. Took two times to get ribbon cable inserted and aligned correctly. display functioned properly, but blower still not turning. replaced upper blower. everything working now. 

We called a local appliance repairman. When he arrived it was clear he was only able to guess at a cause and randomly replace parts. Since I am very good at same I sent him on his way with a $55 dent in my wallet. We looked at the specs for the oven on this site and compared notes with several sources on the Googles. The winner seemed to be the "electronic control board", which we quickly ordered from ApliancePartsPros.com. The part arrived in 2-days (paid for 2-day shipping). We removed old part with new. Look at diagrams - you can figure out how to take apart. In the end all went well and oven is working famously. Only word of caution - watch the very top lip of the over behind the control panel. The darn thing is as sharp as a razor blade and then some. 

Replaced control board. Hardest part was removing cable clips from old board. Had to re-seat ribbon cable twice in new board to eliminate error message. After that it has worked perfectly. 

Thanks to the help of this site and all the great help from people on here I was able to replace the controller board with relative ease. One quick small suggestion to other folks about to do this, take lots of pictures of all the cables, their location, and just of the panel in general before unplugging the old board. I had to go back and refer to them a few times because there were a few wires that were the same color and same connector type so you could easily get them in the wrong spot on the new board pretty easily. 

This display and control board fixed the issues. If it wasn't for the appliancepartspros.com and the advice on this board I would of spent 2x-3x this to fix it. Thank-you! 

I replaced both the control board and the membrane switch. both were easy to do. Just be careful to note where all the wires are before you remove them. Slight difficulty connecting the membrane to the control board and that was because I did not remove the clipped connector from the control board before I try to insert the ribbon. Remove the clip connector by pressing the ends together, the slide the ribbon through it, then reconnect the connector to the base with the ribbon still inserted. My oven is now working fine, thank to help from AppliancePartsPros.