Siemens se25m851gb dishwasher motor capacitor not working?

I’d start with water valve.

Most capacitor start motors have brown wires from the motor going to the capacitor.

More often than not when any dishwasher motor will not turn, it is the motor start capacitor at fault. It is quite rare for the main wash pump to seize.
The start cap is a cylinder about the size of a D size battery and would have 2 to 4 wires going to it.
It may look like it is melted, or maybe not. But usually will only cost you a few dollars from an appliance part store or ebay. just make sure you get the correct mF rating.

check the pump motor...........
cheers

Basically, the wash motor is jambed. Gain access to it and turn the pump shaft. If jambed, it will then loosen up and function again. If it is free to turn, the capacitor has then short circuited.(replace the cap).

I removed the dishwasher and put fill hose on mains pressure. (30 to 45psi or 2 to 3 bar). Working ok now. May be issue with water pressure switch ?

The loud humming noise can be due to the pump sticking if a piece of debris gets trapped in it or an intermittent fault on the pump capacitor or starter relay.

Check out these links below to get tutorials and advice on how to clean the pump or change the capacitor or relay which is cheap and simple job. How to replace Dishwasher pump Bosch Siemens etc Dishwasher Repair Manual Table of Contents http://www.ukwhitegoods.co.uk/help/fault-codes/dishwasher-fault-codes.html?start=25
I hope this helps

sounds like a drain pump ... you may have a damaged drain pump or something stuck in it.. turn off the power the the dishwasher... .remove toe panel and you can see the drain pump on the left ..you can remove plastic hose on the left to drain the dishwasher ...be sure to catch the water will come out ... you can remove drain pump press release tab and turning drain pump ...hope it helps

Hi,

I was looking for spare-parts for my dish-washer Siemens Lady-Plus 25, bought in 1993 !....and I find your request.
I still have the multi-language "Operating Instructions" manual for it....
Still needing one ?
I can of course send you via e-mail, the english pages of it.

Patrick Huens.
Belgium.