Tip & How-To about Washing Machines

Washing machine motor issues with brushes and carbon dust read this if your home electrics trips or you get motor F or E errors

Due to carbon dust build up around the drum motor in most washers that have non linear motor that have carbon brushes
you can get a state of error i call a ghost error
as its just due to the build up of carbon powder around the motor its connector and stator coils {speed pickup}
as the brushes deplete you end up with a pile of it building up between the brush contact and the motor housing leading to electricity leaking to earth of the motor metals

so a stiff dry new paint brush and give the motor a good brush around to remove the conduction path the dust creates

this effects the low voltage sensors in the motor like its speed control etc
leading to the mcu controller board miss diag the motor as bad and you get a E or F motor error
also this can and will trip your homes MCB detector and ECLD mains power switch

as i say its a ghost error and easily solved

any engineer worth his salt when fitting new brushes or even looking at this fault
will do this first to try to clear the fault if the brushes are aok
before he condems the controller board ... as bad

a new set of brushes should be part of a service you should carry out
much like an mot when its outside its warrenty period

and brushing out the old dust
should be done anyway when new brushes are fitted when needed
or there condition checked as still ok

basically brushes should be about at least 3/4 " long for a life left of about a year
and have enough preasure on the armature to ensure good current flow too it via the stator
if you have motor F or E fault conditions or a machine that trips your mains on spin etc
this prob needs done anyway
a set of brushes it cheep and a brush is also cheep

so give it a good brush out
then reset the machine
you power off at the mains
you hold in a button or two
you power on at the mains
ive read some machine need the program switch to be placed and then dialed like a safe to reset the main board from some types of motor fault
caused by carbon dust build up typical candy auto washers.. and others
they make it hard to make people money

Posted by Anonymous on

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stairmaster pedal resistance electrical problem


How To Clean Commutator Using Commutator Stone
Did you use a commutator stone when installing the new brushes? A commutator stone is used to remove carbon build up from the commutator of a motor or alternator, which is created from worn brushes. The commutator is the internal part of the motor or alternator that spins and makes contact with the motor or alternator brush.
BE ADVISED: The dust created from cleaning the commutator is a carbon dust. Use caution when removing dust so as not to inhale.
If servicing the motor or alternator without removing from the unit, be sure to disconnect power from the machine.
To remove the carbon build up from the commutator, first remove the brush from the motor or alternator. Insert the commutator stone into the brushes place in the motor or alternator. Apply slight pressure against the commutator stone and by hand, slowly turn the motor or alternator shaft. As you are turning the shaft of the motor or alternator, the commutator stone cleans away the carbon that has built up on the commutator.
Use a vacuum hose to suck out the dust debris or tip the motor/alternator over and allow the carbon dust to fall out.

I am also attaching a video on how to install the brushes just for an extra reference.
Stairmaster Alternator Brush Replacement Video

Jan 20, 2014 | Stairmaster Exercise & Fitness

3 Answers

AEG Electrolux Lavatherm 57800: Push a program button, Machine starts for 3 - 5 seconds, Then stops and timer is on 0.


try cleaning the drum contact on the rear of the machine. It is a carbon brush that contacts the drum spindle. It can get covered in carbon from the brush.Remove the plastic cover containing the contact brush, clean out all carbon dust and lightly sand the drum spindle to remove any surface build-up and ensure a good electrical contact then reassemble.

Nov 27, 2010 | AEG T57800 Electric Dryer

1 Answer

Have WD63 WASHER/DRYER & the drum stopped turning. motor ok & drum turns easily when turned manually.


Could be the carbon brushes on the motor. They're usually quite cheap and easy to replace. In this area you can expect to see a lot of carbon dust (black). The brushes themselves should protrude from the case by around 4-6mm.

Could also be a loose connection between the power feed and the motor.
Will it pump? Some machines die completely when the pump fails.

Jul 18, 2009 | Hotpoint Aquarius WMA42 Front Load Washer

1 Answer

Drum Does not Rotate


the carbon dust that you mention ? on the drivebelt will//may have come from the electric motor carbon brushes especially as you sy machine is 4 yrs old you can diy inspect the brushes by removing the rear panel to access motor unplug the socket from motor then slacken belt and remove belt from pully remove the motor you will see location f brushes x2 opposit each other and normally held in position ont armature of motor by coiled pressure clip like watch spring and brush has wire embedded in it and other end a push on terminal? when these brushes wear down normally the fist indication is fast spin slows then eventually no rotation of drum? over a period of time? SO easy diy to renew brushes if as above worne down /not contacting armature? cost approx £5 here in n/west uk worth investigating and diy saving ££££s $$$$s? and i hope you have good luck hope this helps/inspires you?

Oct 26, 2008 | Hotpoint Aquarius WMA56 Front Load Washer

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