Stand Mixer: Runs on low speed, but rotates slowly

Bad wiring connections or a faulty speed control plate can cause the motor to run extremely slowly and not speed up even to the lowest rotation speed when you move the control lever to higher speed settings. If your mixer uses an electronic control board to control motor speed, a faulty board can prevent the motor from speeding up when you move the control lever to increase the speed.

If your mixer has a removable cover on the back end of the motor housing, then the mixer uses a speed control plate to control motor speed. Unplug the mixer and remove the back motor housing cover. Check the wire connections on the speed control plate and reconnect any loose wires. If the wiring connections are good, then you'll likely need to replace the speed control plate.

If your mixer doesn't have a removable back cover on the motor housing, then the mixer likely uses an electronic control board to control motor speed. Unplug the mixer and replace the electronic control board if the motor runs only on low speed.

stand mixer

These repairs may help solve your stand mixer problem

Replace the stand mixer speed control plate

Replace the stand mixer speed control plate

The speed control plate works with the switch lever, governor and the phase control board to control motor speed. When you move the switch lever to a speed, the lever positions the speed control plate at the proper distance from the governor to attain the desired speed. The phase control board applies the correct voltage to the drive motor to maintain mixer speed based on signals it receives from the governor. A damaged control plate won't help the governor and phase control board control the mixer speed. Replace the speed control plate if it-s damaged.

Symptoms common to all stand mixers

Choose a symptom to see related stand mixer repairs.

Main causes: bad wiring connections, faulty speed control plate, electronic control board failure
Main cause: attachment clearance setting needs adjustment
Main cause: worn carbon motor brushes
Main causes: phase control board failure, wiring connection problem, faulty electronic control board
Main causes: lack of electrical power, wiring failure, worn carbon motor brushes, bad drive motor, tripped overload switch, control problems
Main causes: bad worm gear, damaged planetary gear assembly
Main causes: bad lubricating grease, mixer sitting idle for weeks at a time, mixer running constantly for more than 30 minutes

Repair guides common to all stand mixers

These step-by-step repair guides will help you safely fix what’s broken on your stand mixer.

September 20, 2015
By Lyle Weischwill
How to replace a stand mixer phase control board

The phase control board works with the governor and control plate to control motor speed. Replace the phase control board if defective.

Repair difficulty
Time required
 30 minutes or less
September 20, 2015
By Lyle Weischwill
How to replace a stand mixer worm gear

Here’s how to replace the worm gear in your stand mixer if it’s worn or damaged.

Repair difficulty
Time required
 30 minutes or less
September 1, 2015
By Lyle Weischwill
How to replace stand mixer motor brushes

If the carbon brushes are worn and damaged, replace them using these steps.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all stand mixers

Use the advice and tips in these articles and videos to get the most out of your stand mixer.

December 16, 2015

Using a wiring schematic to trace a current video

By Sears PartsDirect staff

Find out what’s wrong with your appliance by following a circuit.

December 9, 2015

How to read a wiring schematic video

By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.

December 2, 2015

Wiring schematic symbols explained video

By Sears PartsDirect staff

Learn some of the most common symbols found in a wiring diagram and what they mean.