Question about KitchenAid KP2671 Professional 6 Series Stand Mixer

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Kitchenaid Professional 600 Model KP26M1XPM

We start it and it rapidly increases its speed to max and then shuts off. I have taken it apart and am looking at the speed control switch. Nothing stands out as a problem. I have used compressed air to clean out the slider in hopes it is failing to make a proper connection do to flour dust or something.

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  • Anonymous Jun 18, 2008

    I have the exact same problem. Only one speed-super fast then shuts off

    sometimes, sometimes it continues to increase speed until I turn it off.

  • alf_lasvegas Jan 20, 2009

    the same any idea what could be,

  • jeff670 Feb 08, 2009

    Same problem here. Just happened today.

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I would recommend that you first check the Hall Effect sensor which determines the mixer’s speed.  I had this exact problem and I actually went out and bought another Hall sensor for about $13.  I replaced the original sensor and made sure that the connection between the sensor and control board was nice and snug. My mixer worked as good as new! But I was curious to know if my original sensor was defective, so I put it back in mixer and again made sure all of the connections were tight.  Guess what?  My original sensor also made my mixer work!  There was nothing wrong with the original Hall Effect sensor except that the connection between the control board and sensor was not snug and tight--unfortunately I didn't check the connection before I decided to buy another sensor. My guess is that the connection between the control board and the sensor probably loosens or comes undone over time from use and vibrations. 
1.  Download the mixer parts and diagrams from the Kitchenaid website to see what the Hall Effect sensor looks like. BTW the part number is 9703312.

2.  You'll need a phillips head screwdriver to open up the mixer gear case cover.
3.  Make sure that the connection between the control board and sensor is absolutely tight and snug.
4.  Also, make sure that the orientation of the sensor is correct.  It's difficult to tell which way the sensor should be connected because the control board has three prongs and the sensor can attach facing up or down. After you've made the connection, run the mixer. If it still doesn't work, disconnect the sensor, reconnect it with the prongs facing the opposite direction and try it again.  I actually found the right sensor orientation through a little trial and error.  But by going through this trial and error, I also had my Eureka moment when I realized that the original sensor probably would also work if it were reconnected with correct orientation.  
5.  This whole process probably takes less than 10-15 minutes to perform.
6.  Finally, use your common sense and make sure to unplug the mixer before checking, connecting or disconnecting anything.

Posted on Mar 21, 2009

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He rdnowak:
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If you found this solution helpful, please rate it. Good luck! ricardok45.

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