If your Miele vacuum isn’t running properly, and you’ve been able to test the power switch and cord reel for continuity, it might be time to replace the motor. Common reasons for motor failure are wet or liquid pickup using your Miele, or an improper bag seal, resulting in a bag blowout. Both options introduce foreign materials to your vacuum motor and can cause failure quickly. Below are some good things to know before starting your Miele motor replacement, or you can also watch our YouTube video for some additional ideas.
Though we have talked with other dealers and reached out to Miele, we do not currently know of a way to test their motors, besides just determining if it runs or does not run. We have not yet found a way to test the three wires that lead into the motor.
If there is a fault with the vacuum bag being inserted, dust and debris will blow into the fan blades. When you remove the motor, it should be obvious that debris has entered the motor and it is bad. If your vacuum is used to pick up liquid or wet material, it will also kill the motor. Visual inspection of the motor will show white crystallization or rust, in bad cases.
Once you have opened your vacuum, the motor housing should be able to be popped out. The motor sits inside, and is accessible by depressing a few clips around the top edge. It can be quite difficult to find a match for your Miele motor when looking online and researching. The same model of Miele vacuums may have used a large number of different motors. When removing the original motor, we highly recommend making note of any part numbers or identifying information on the motor itself to help you when you order your new motor.