[masondean1]

Started getting error code F 6 constantly, I know to check the wiring harness, and make sure the its connecting good. What is the best way to diagnosis whether it is the motor, ccu, mcu, or the harness itself. I service margarita machines for a living, so very technical, and have all the necessary tools. Thanks for anyone who can point me in the right ****************.

[sidfink43]

I think this service manual will cover your machine, but as you will see there is no good way to completely isolate the part failure. In many cases a service tech will just replace and replace until they get it fixed, which just doesn't work for people who do not have a truck full of parts at no cost.

https://secured.whirlpool.com/Servic...0Job%20Aid.pdf

Furthermore, it may be a problem in the door lock assemby, or even some other part like the motor. These machines are very difficult to diagnose the communications errors of F6 and F11.

Hope this helps, and working on Margarita machines sounds a whole lot better than working on Duets (you did not post a model number but the He3 is likely a Whirlpool Duet product).