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Bosch Classixx 1400 Express WAE28162GB/03


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Hi I have a Bosch Classixx 1400 Express WAE28162GB/03. It did a wash but didn,t rinse the clothes off. I discovered that it was not spinning. I have cleaned the water pump out this didn't make any difference. With further investigation I discovered that the motor brushes were also low so I cleaned the motor of all the carbon residue and replaced the brushes with new ones. The machine now attempts to spin but doesn't it sort of does an 8th of a turn and then stops. Is there anything else you can think off that I can do.

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  • Root Admin

Hello Robbie. When you say the washing machine was not spinning do you mean that the motor (and therefore drum) is not moving at all at any time? All do you mean that it washes okay, but just won't kick into the spin?

If the carbon brushes were quite worn, then replacing them is a good idea. But if both brushes were nice and shiny where they contact the commutator, then it's unlikely that the brushes were causing the fault. Check this guide for more information - Do I need to replace the carbon brushes?

If one of them was charred, like in the examples given in that article, and it got the motor at least trying to run then the first thing I would do is take the motor back off and double check all connections in the motor harness and the motor plug as well as doublechecking that the carbon brushes have been fitted correctly. The curved end needs to be running on the curved commutator.

 

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Hi Andy thanks for your response. Initially the machine was washing as normal but at some point through the wash the drum was unable to turn at all so the washing must have just sat there until it reached the drain cycle. It wasn't until I removed the washing that I realised it hadn't been spun. I wasn't near the machine at the point that it had stopped. The washing machine won't turn the drum fully on a normal wash or a spin. The brushes I replaced were down to about 10mm long either side and I am aware that they had to go in a certain way because of the chamfer on the end so I made sure they were the right way round. I would also assume that if they were the wrong way around they could catch or snag on the commutator. I did hand turn the motor after installing and it turns smooth and free. Also after installing the brushes the motor is engaging as if it wants to spin but only moves the drum about an eighth of a turn before stopping so it is doing a bit more than before I replaced the brushes.

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If the motor is attempting to turn but has no power to run its usually a fault on the electronicsin the pcb or module. But it can also be a fault in the armature or windings. So it's not something you can fix yourself. An engineer would just try a new motor and if that didn't work put the motor back and try a pcb. You can't do that because you'd have to spend a lot of money on a part that may not fix it. 

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how about the motor capacitor? in the old days to turn a motor it would be a big silver shiny capacitor like this to start the motor:

image.png.d2fd1e0f34de1d1f2d4d9035b42b9c51.png
But these days it will be on the motor control board , maybe if you track that down you could try replacing that with a capacitor from an electronics shop? - maybe that will get motor moving again?
 

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Hi Andy. Capacitors are used to start induction motors without brushes. Brush motors are controlled by varying voltage through a speed control module or pcb. 

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