Question about KitchenAid KP2671 Professional 6 Series Stand Mixer

9 Answers

Mixer goes really fast then stops

My mixer often will start going really fast then stop no matter what speed it is put on. I'm assuming it's the control board, but I see there is a sensor in there as well. What all should I replace?

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  • DavidClawson Jan 04, 2008

    When the mixer was turned on, it would start slow and then speed up to max speed in about 2 seconds. We operated the mixer that way for a dozen or so starts and stops. That is, the mixer was started. Let it run for its small 2 second run time. Move the speed control to stop and then restart it. Now the mixer does not run at all.

  • Kayla2017 Jan 13, 2008

    Mixer goes really fast when first turn it on and then stops after a few seconds. Turn it off and turn it on and the same thing happens over and over again.

  • dcthompson Feb 03, 2008

    Last nigth I was making mashed potatoes and as I increased the speed to high the mixer came to a dead halt. Checked circuit braker at outlet etc. It was just the mixer. It was dead. After about 20 minutes it started up again. Does anyone have any \solutions to this problem?

  • sgbinmb Mar 17, 2008

    I have the same problem.  Turn on the mixer, no matter what the setting it speeds up to top speed, then after a few seconds it turns off.  I think this happened once before and it went back to normal after giving it a rest.  Unfortunately, this  time I'm in the middle of something I can't stop or switch to another appliance.

  • tfestate Mar 19, 2008

    I have a similar problem. Mixer only runs at high speed, no matter what the setting. This happened once before and it seemed to resolve when I reseated a wire on the circuit board. Now I can't seem to get anything to work.

  • sisteragnes May 26, 2008

    I was mixing my bread and all of a sudden in jump to an ultra speed and continues to operate on the highest speed. I can't use it. What should I do--it is old and if there is a simple solution I would love to hear it.
    sa

  • wannaeat Jun 07, 2008

    Kitchenaid Professional 600 Model KP26M1XPM (found on the bottom of the mixer) .



    Same problem where 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.



    Found this site with replacement parts....



    http://www.partselect.com



    Hope it helps someone. If you have your own solution to this common problem, PLEASE POST IT!!!!!



  • ohirider Aug 30, 2008

    Mixer runs for about 5 seconds then shuts down. When you turn it off it seems to reset andwill do the same thing again. I'm having trouble locating a speed control board p/n 9706650.

  • thelmasally Sep 28, 2008

    I have the same problem as everyone else.

  • Nick Miller Oct 22, 2008

    My Brand new refurbished KitchenAid Pro-purchased directly from KA website, went crazy-speed suddenly while kneading bread too. It was 2 mos into it's 6 month warranty, I *hope* that is good news. KA staff was suspicious "what flour? how much? How long?" Then finally agreed to replace under warranty. There is a LOT of warning about NEVER using it for dough over speed 2 (I complied) tho every other KA owner says this is something new to them, they never have trouble or lugging at over "2".

    Is KA skimping on quality internal parts now, or what?

    $300 plus for what I thought was the best home machine made...highly recommended...and I see I am not the only one with this problem?

    I will be watching for other's remedies...when it happens again...and it looks like it will!


  • joyofbaking Dec 30, 2008

    I have a Kitchenaid professional 600 mixer.  A few days ago I was using it and it jumped from the lowest speed to the highest speed without my touching it.  Now when I turn it on, it operates at only the highest speed.  I bought a new Hall sensor and replaced my old one.  However, this didn't fix my problem.  Does anyone have any other suggestions?


  • graceo Apr 14, 2009

    I also have the Professional 6 Series KithenAid Stand Mixer. The exact same thing is happening with mine. It will only run at an extremely high speed, even when I just turn it on to Stir speed. It runs for about 20 seconds and then shuts itself off. I called the 800 repair number and the rep said it would cost 32.00 for a shipping kit that they would send me for round trip shipping and they would call me with an estimate of what the cost of fixing it would be. I asked what repair costs generally run and his reply was $150 - $200. Then he had the audacity to proceed with trying to sell me a brand new mixer for $369 (30% off retail price - whoopee!) and a mail in rebate for a free ice cream freezer attachment(double whoopee!). After reading a multitude of consumer complaints with the exact same problem, and some where they've paid to have it fixed, only to break again; I've come to the conclusion that this product is not worth salvaging. KitchenAid has lost this customer. I think the only solution is to not buy KitchenAid until they change their practices.

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First thing, check the Hall Effect Sensor (part # 9703312) to make sure that it is seated snugly AND properly!  The Hall Effect sensor measures the speed of a tiny rotating magnet and basically tells your mixer how fast it should rotate.  I was experiencing the same problem that many others have described here--my mixer would go really fast no matter what speed I put it on and it would shut off after five seconds. I came to the FixYa site and saw that one solution that seemed to work was to replace the Hall Effect sensor.  So I went to a local hardware store and purchased a new Hall Effect Sensor for about $13.  After I replaced the "defective" sensor, my mixer still did not work.  So, I started experimenting with the three prong orientation of the control board--this can make a big difference. After a little trial and error, I found the correct orientation for the sensor and my mixer worked good as new!  But I was curious to see if the improper orientation was the cause of my original "defective" sensor.  So I put the "defective" sensor back with the proper orientation and THIS ALSO FIXED MY SPEED PROBLEM! There was nothing wrong with my original Hall Effect Sensor at all--it simply was not snugly or properly seated!  I'm not sure how it happened--possibly over time the sensor prongs may have become unseated from the vibrations of running the mixer on high speeds--but my original Hall sensor was not seated properly or snugly.  So before you run out and buy a new Hall Effect sensor make sure that the original one is not only snugly seated but also properly oriented!  If I knew how to add digital pics, I would have put pictures in my comments to clearly demonstrate what I found.  Unfortunately, I am not sure how to do this.   To sum this up: 1. Download the parts information and diagrams from the Kitchenaid site and find the Hall sensor (part # 9703312).  2. Make sure that the Hall sensor is firmly attached on both ends.  The actual sensor should be located next to a tiny magnet and this end needs to be securely seated.  And the other end of the Hall effect sensor has three small prong holes which also need to be firmly and corrected seated to the control board! Bottom line, my mixer is working like new and I put the original Hall Effect sensor back in the mixer. I'm going to hold on the new one as a backup...you never know.

Posted on Dec 30, 2008

  • joyofbaking Dec 30, 2008

    I think the general message here is that in most of the high-speed-mixer-out-of-control cases, it's the Hall Effect sensor that's the issue. However, before you run out and buy a new sensor make sure that the old one is actually defective.  It needs to be reseated firmly and correctly to the control board for anything to work.  So make sure the sensor is properly connected first before running to the hardware store.  I know it would have saved me $13 and a lot of needless worrying.  

  • Hatrd4Cptlsm Mar 10, 2011

    So. awesome! I was thinking I had to order some very overpriced new parts, found this advice, shimmed that sensor with some strips of an old credit card--it took a couple of tries to get it focused on the shaft right--and now it's working fine again!

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The Hall Sensor worked for me as well. Cost was less than $10. First step is to download parts manual from Kitchen Aid site, find part number and then order part from local repair shop. Remove top cover from unit by removing 5 screws, replace sensor, and mixer should work like new.

Posted on Nov 10, 2008

  • pvmartin Nov 10, 2008

    The Hall Sensor reports the speed the drive shaft is turning back to the speed control unit on the main board. (See Wiki for how it works.)

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After hit and-miss-take-apart I discovered a simple solution to tweak the Hall effect sensor. I took the two klystron magnets from a trash microwave and gently passed them by the aluminum body of the KitchenAid just between the slide control and the ice cream gear outlet . . . and voila: the rpm is constant and uninterrupted. I'm to assume the hall effect sensor-- uses permanent magnets to provide the transverse field for the current flow and subsequent distorting and consequent area voltage difference through the active current region. The magnetic field must come from the electric motor axle which seemed to mount something akin to a magnet.

Posted on Aug 23, 2009

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My wife has a 450 Watt KV25GOXMC Professional 5 mixer that jumped to the highest speed while kneading bread. She had it set on #2 speed setting, and the stand was vibrating. I tried using it later, without anything in the bowl, and it worked fine on all speed settings.

I opened the top bracket of the mixer and examined the main board and hall sensor. The plastic housing of the hall sensor was not holding tight to the mixer body (some motion could occur). I took some aluminum foil, folded it to a desired width, and inserted it next to the plastic housing (on the rear side closest to the rear of the mixer). It allows for no further movement, and is very tightly wedged such that it should not come loose. I could remove it if I used needle-nose pliers.

I re-attached the top bracket and gave it a movement test. All speed settings were under control while the movement continued.

I will update this note if I have any problems with this mixer.

Posted on Apr 29, 2009

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I wiggled the hall sensor wire and it fixed itself. God maybe???

Posted on Mar 21, 2009

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I replaced the speed control assembly on my Kitchenaid mixer and it had no effect. KA customer services will not help and only tells you to take the mixer to an authorized service center.

Posted on Sep 16, 2008

  • Niccos Sep 19, 2008

    I just changed the hall sensor on my mixer and all is well (for now). The part cost $15.

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The partselect.com web site has good info if you have the model No. information. I plugger in my model KD2661XMC and came up with a potential lead --- The Speed Control Switch. The cost of the switch is $83.00, and I am seeking a second opinion before buying the part, simply to verify that it may be a solution.
Has anyone tried the KA website??

Posted on Jul 07, 2008

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Taht is the Hall sensor, 9703312 available from total service.

Posted on Mar 23, 2009

I replaced the Hall sensor and fixed my problem. Not sure the part number, but if you call a parts place, they will know. It was fairly cheap as I recall.

Posted on Sep 16, 2008

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