Miele WT945 - no water going into drum

[jj4091]

As a matter of interest have you tried running different programs ie spin or dry only and what happens if you do.

 

[wijcc]

yes i have, the drain pump is constantly running. I did hear click before the pump started running near the bottom of the machine when I reset/tried resetting the machine (removing the power for 10 mins and then powering it back in)

 

[Harry Bloomfield]

but then after a while even though it is not on any programme the pump kicks up again.. the only way to stop it is to switch the machine off.

That reads as if the pump relay has welded itself up, or perhaps the relay has broken up internally, and is shorting out, but....

The only time the drain pump is not on/running is if I put it on a drain cycle, then the machine works as it should, it drains and finishes without any errors and no constant drain pump running..

The above suggests, it simply cannot be the relay, if it works properly on that program.

It's not the pressure switch, that determines the water fill level.

I cannot think of any reason why it might want to both try filling the drum, whilst at the same time trying to empty itself. My best guess at the moment is a wrong instruction, in the coding, of the processor, and the only fix, in that case, might be a replacement pcb.

One further test you could do, is to unplug the pump, insulate the wire ends, then try a quick wash cycle. Off course it will get stuck at the end, unable to drain, so you would need to then drain out into a bowl, by lowering the drain pipe, to release the water.

In the past, to get parts cheap (might get you a pcb), I have rung around used washing machine/ repairers, in poor areas - they tend to collect parts to carry out repairs using salvaged parts, so keep a bit of stock..

 

[wijcc]

Thank you... I will try disconnecting the pump as you suggested.

Is this PCB - EPW 900 - which I would possibly need to change? it looks complete, no requiring any soldering or such.. just putting in some plugs/connectors

Thank you

 

[Harry Bloomfield]

Is this PCB - EPW 900 - which I would possibly need to change? it looks complete, no requiring any soldering or such.. just putting in some plugs/connectors

I'm not an expert on washing machines, just someone who sorts their own out, when it fails. All I can say from your photo, is that it does look as if it might be the pcb, but it could equally be just the front panel behind the control buttons. Your best bet is find a parts supplier, which supplies a list of parts for your machine.

The people on uk whitegoods , are very helpful, and very knowledgeable, you might try posting your washers symptoms on there. Someone might have come across it...

Yes, usually to swap complete parts, all that is needed is to unplug, and replug the replacement.

 

[wijcc]

forgot to mention that it works fine when spinning.. in spin mode, just pump starts when it has finished spinning and keeps going/pumping

 

[Harry Bloomfield]

forgot to mention that it works fine when spinning.. in spin mode, just pump starts when it has finished spinning and keeps going/pumping

Pumps normally start, and run, throughout the spin process.

 

[wijcc]

The machine seems to be working as normal as it should be when spinning just after the spinning is finished the pump keeps going despite the cycle has finished

 

[jj4091]

I think you should consider asking Miele for an estimate of how much a repair might cost.. They may do a fixed price repair which includes parts and labour. The problem with replacing boards yourself is that there can be different boards for different machine serial numbers and even if you manage to get the correct one it may need to be programmed on the machine. Plus you still do not know if it is a board fault or not, nor which board it is. You may well end up chasing your tail and replace one part after another and still not repairing the fault.
There is very little information available about Miele machines so it makes DIY repairs difficult.

 

[wijcc]

Thanks.. will look into the cost of a repair via Miele.
If it is more cost effective to just get a new machine. I don't have or want to spend the big bucks to buy another miele despite the many long years of service this one has given.
I used to also go with Bosch machines previously but it seems like except their high end 8 series machines which are still made in Germany they rest are made elsewhere. Which brands are best to go with these days for under £400-500? I would pick ones that come with 5 year warranties?
Thank you

 

[pto]

20 years old well i would get the same make coz you wont get 20 years out of any other

 

[wijcc]

Has anyone removed the pcb board on a miele before? I am struggling to remove it and the front knobs too. I tried putting a flat screwdriver in the gap behind the knobs the pulling on them but they are not coming off.. I don't want to snap them off or break them. Is there any tricks or correct method to pulling them off instead of using brute force?

 

[flameport]

Has anyone removed the pcb board on a miele before?

Miele are a closed shop, repair info is not available and neither are the parts. If you want a repair then you contact Miele and pay them.
The concept being that people who are willing to spend £1000+ on a washing machine also have money to burn away on expensive repairs - and that's why they claim their machines last for decades, because if you pay to have it repaired it will indeed last that long.
There is also the regret factor of paying so much for a machine that you are then compelled to spend more to fix it even though just buying a new machine from some other make would be cheaper.
It's the same method of marketing grossly overpriced pieces that Apple uses.

 

[pto]

They just pull off

 

[wijcc]

Thanks and woohoo.. I managed to get knobs then board out!.
It all looks fine to my eyes. However I found some circuit board diagrams in wallet attached to the inside of the machine. I am wondering whether the drain pump relay is not on the mainboard out elsewhere on the machine with a wire from wherever the relay is going to the mainboard???
From the papers the following:
A - drain
M8 - drain pump.
I took pics of the docs and here's the links for larger images

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Image PXL-20250705-233349166-MP-2-2 hosted in ImgBB

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PXL-20250705-232953594-MP-2 hosted at ImgBB

Image PXL-20250705-232953594-MP-2 hosted in ImgBB

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PXL-20250705-232852940-MP-2 hosted at ImgBB

Image PXL-20250705-232852940-MP-2 hosted in ImgBB

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