Dishmachine start a new cycle when customer opens the door after a finished cycle.

you can try looking at www.elektrotanya.com on google chrome browser. They may or may not have it but it is definitely a door switch. If you take it apart and find the door switch you can ohm them out and they are just a set of micro switches

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

This should be a fairly simple job, the only thing that may cause some people trouble would be if the switch has solder and not push on connections. This is an NO switch (normally open) Part # 00-087711-183-4 with two wires, one each to either connection.
1.Unplugged or turn the breaker off for the mixer, pull the cap off the start button.
2. Remove one of the lower screws from the electrical control panel plate and use it to get two screws 1 inch or longer that are the same size and thread.
2. Remove the other bottom screw from the control plate and screw the 2 longer screws into the bottom holes no more than one quarter of an inch. The screws will give you room to work and support the control panel plate while you are replacing the switch. Remove the 2 top screws that hold the electrical control plate to the machine.
2.Remove the 2 screws from the front of the control plate that secure the start button in place.
3. Install the new switch, make the electrical connections, replace the 4 screws in the control plate, and push the cap back on the start button, Plug in the machine or turn the breaker back on and you're done.
PS: you should avoid touching the other components on the electrical control panel.

If you have a really "Brand New" mixer then Kichenaid has the best "No-Hassel" return policy bar none, call customer support and they will send you a new one. If it is a new mixer still in box never used but is a couple years old then look for the warranty card and go on line to see if you can register it. They may let it by, just remember that you must mark it as received as gift and price payed unknown. if they let it pass then again call KA and they WILL send a new one. On to the more painful part, if the mixer is out of warranty and it has to be fixed the choices are:
1: send it to your nearest KA service center either by taking it or mailing it. be prepared to spend $100.00 plus dollars to do it this way.
2: send it to a local repar tech that has experience with KA probably $65 (what i charge) or maybe less.
3: Or do it your self, Not hard to do but!!! it can frustrate some people, go to KA site and get your parts list from that site for your model. then search the web for you tube videos that show you how to replace the grease, it will show you how to open and reclose your machine, then go to the speed control switch and locate the spring that is attached to it, i beleive that you will find that the spring has come loose and it is jambed in place (very tight space allowance in there) hook it back up and close up your machine and i bet a dollar to a donut that it runs fine. BTW if you find that it is not the spring being loose you will be able to diagnose the cause of the jam as the mechanism is very simple. hope this helps.

it will have flooded the base of the machine tripping an anti flood device just mopping up the water resets the float switch.

There are four possibilities to look at here. Assuming your mixer has a normal capacitor start motor (older a200's used a different style motor), possibilities are, in order of likelihood:

Motor start capacitor
Start switch (electronic or mechanical)
Burned wiring
Motor start winding

The start capacitor is located at the rear of the mixer. Remove the rear cover (4 screws) and pull the cover towards you. Disconnect one wire from the capacitor and test with any multimeter.

The start switch, if electronic, is able to be tested, but not very easily. Once you've eliminated the other possibilities, it's time to replace the (electronic) start switch. If the motor has a mechanical start switch, it's easy to test: Remove the two wires at the rear of the motor and test for continuity with the motor stationary. A multimeter should show near zero ohms for a good mechanical start switch.

Burned wiring should be easy to spot with some careful inspection around the motor, capacitor, and start switch.

Start winding: Look closely at the stator (stationary part of the motor). If some of the copper windings look significantly darker in color than the others, it's likely the start windings were overheated (the start windings are the thinner copper wires - if you look closely, approximately half of the wires are thinner than the other half). Look for a wiring diagram behind the power switch and determine which wires leading to the start switch and/or capacitor are for the start windings and test for continuity across the start winding. You should read a fairly small value such as 5 - 15 ohms. Values significantly outside this range could indicate a partially open or partially shorted start winding.

The answer is clearly in the starting circuit which doesn't have too many parts, but depends on the type of starting circuit your mixer uses (electronic or mechanical start switch). I'm assuming your mixer isn't very old, as the old units used brushed motors which did not have starting circuits.

The parts of the starting circuit are the motor start winding, the start capacitor and the start switch (probably electronic in your case which is a small silver box with four wire terminals on it). The capacitor should be tested with a multimeter after verifying it's not holding a charge (check with multimeter set to DC Volts, mixer unplugged, should read zero volts).
Start winding should be tested with the meter to measure ohms. Locate the wires leading to the motor (hopefully only three wires) and you should get a reading for all three combinations of measurements (wire 1-to-wire 2, 2-to-3, 1-to-3) if meter indicates open on any of these, motor stator is bad(this is pretty rare and quite expensive).
Electronic start switches are not very simple to test, but if the capacitor and motor test out OK with the meter, and all the wiring is intact (look closely for loose wires, burned wires, poorly crimped terminals, etc.) then it must be the start switch.

Hi DALE, from the symptoms you describe, it sounds like you've got problems in your (speed) control assembly. If your mixer were out of warranty, I'll tell you that you could fix it yourself, but as your mixer is less than one year old, let KA fix it or replace your mixer on their dime. Contact them immediately and tell them about your problem with the speed control.
The KA website is at: http://www.kitchenaid.com/flash.cmd?/#/page/home. Click on Customer Care>Contact Us> and the toll free phone number is listed to speak with someone. You can also look under the Warranty & Service Plans to see what KA will do for you. I've extracted parts of it here:
Hassle-Free Replacement Warranty
We’re so confident the quality of our products meets the exacting standards of KitchenAid that, if your mixer should fail within the first year of ownership, KitchenAid will arrange to deliver an identical or comparable replacement to your door free of charge and arrange to have your “failed” mixer returned to us.
Your replacement unit will also be covered by our one year full warranty. Please follow these instructions to receive this quality service.
If you reside in the United States and your KitchenAid® mixer should fail within the first year of ownership, simply call our toll-free Customer Satisfaction Center at 1-800-541-6390, 8 a.m. to 8 p.m.,
Monday through Friday, 10 a.m. to 5 p.m., Saturday, Eastern Time. Give the consultant your complete shipping address. (No P.O. Box Numbers, please.)
When you receive your replacement mixer, use the carton and packing materials to pack-up your “failed” mixer. In the carton, include your name and address on a sheet of paper along with a copy of the proof of purchase (register receipt, credit card charge slip, etc.).

I hope this helps. Good Luck with KA! - Howard, Burke, VA
If this solution has been helpful, please rate it, thanks! - hslincoln

Hi FVBAKER1. Sorry to hear that your having problems with your new KA mixer. As frustrating as your experience is if it still under warranty (brand new and used once sounds like it to me), then I would contact them immediately and tell them about your problem.
The KA website is at: http://www.kitchenaid.com/flash.cmd?/#/page/home. Click on Customer Care>Contact Us> and the toll free phone number is listed to speak with someone. You can also look under the Warranty & Service Plans to see what KA will do for you. I've extracted parts of it here:
Hassle-Free Replacement Warranty
We’re so confident the quality of our products meets the exacting standards of KitchenAid that, if your mixer should fail within the first year of ownership, KitchenAid will arrange to deliver an identical or comparable replacement to your door free of charge and arrange to have your “failed” mixer returned to us.
Your replacement unit will also be covered by our one year full warranty. Please follow these instructions to receive this quality service.
If you reside in the United States and your KitchenAid® mixer should fail within the first year of ownership, simply call our toll-free Customer Satisfaction Center at 1-800-541-6390, 8 a.m. to 8 p.m., Monday through Friday, 10 a.m. to 5 p.m., Saturday, Eastern Time. Give the consultant your complete shipping address. (No P.O. Box Numbers, please.)
When you receive your replacement mixer, use the carton and packing materials to pack-up your “failed” mixer. In the carton, include your name and address on a sheet of paper along with a copy of the proof of purchase (register receipt, credit card charge slip, etc.).
I hope this helps. Good Luck with KA! - Howard, Burke, VA
If this solution has been helpful, please rate it, thanks! - hslincol

It sounds like you may have an issue with either the governor assembly and or the main control. If the speed you are getting is constantly going up an down in RPM then this could indicate that the governor has simply become worn and its resistance is gone. If however you get no speed at all and then all of a sudden you get a high speed then it will most likely be the main control. Part number for the governor assembly is 17830. Part number for the main control is 240904−2. Both are relatively simple and cheap to replace. Hope this helps

Thanks

Hi. These mixers normaly make a lot of noise when in operation. Go to the shop that sold it to you, or any place that has these units on display and ask them to turn on the mixer for a demonstration. If their mixer does not make the same noise, then contact Kitchenaid Customer Service and ask for a replacement under warranty. If this solution assists you, please rate it. Good luck! ricardok45