Home › Forums › Public Support Forums › Help And Support › Dishwasher Help Forum › NEF S51M53X1GB – filling with clean water when off
- This topic has 7 replies, 2 voices, and was last updated 4 months, 2 weeks ago by
timo75.
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AuthorPosts
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November 18, 2025 at 1:46 pm #103669
timo75
ParticipantHi.. Recently my Nef dishwasher always had a pool of water at the bottom of the inside after a cycle. I thought it was a drainage issue so checked the pipes, the impeller, blockages etc and all good. Then I noticed that throughout the day when the machine was off the water level rose and it was clean water. So I think it is on the inlet side that the issue is. I have an aquastop under the sink on the supply pipe into the inlet valve at the base of the machine. I tried turning the power off but the water still rose so I turned the water supply off and that stopped the level rising. Do you think I can assume I need to get a replacement aquastop supply pipe with the inlet valve built in at the end to stop the water leaking in? The part I have found is below. Any help or advice would be gratefully accepted. Many thanks
https://www.partscentre.co.uk/dishwasher-aqua-stop-water-valve-and-hose-299756.htmlNovember 18, 2025 at 11:26 pm #494141kwatt
KeymasterJust to be sure as there are a few versions, what are the numbers after that model, it should have a /** where “**” is two digits?
They show it as a separate aqua stop valve on that model and it ain’t cheap, £85+ not cheap!! Which is, ehm, a bit sore I’ll say to be kind about it for a poxy inlet valve.
However, from what you describe I’d say it’s almost a sure thing that that valve is the problem.
K.
November 19, 2025 at 6:52 am #494142timo75
ParticipantHi, thanks for replying. The model number is S51M53X1GB/01 Thank you for your help.
November 19, 2025 at 9:42 am #494143kwatt
KeymasterThat was the one I checked and it is that expensive valve I got being used on it.
K.
November 19, 2025 at 10:09 am #494144timo75
Participanthi.. sorry so do I need a different part no to the one I showed in the orig post? Are you able to let me know what I should be looking to source and replace? many thanks
November 19, 2025 at 11:06 am #494145kwatt
KeymasterYes, according to the info it is part number 00645701 you need.
K.
November 19, 2025 at 11:18 am #494146timo75
Participantthats so helpful!!! thank you so much!.. I’ll ordder it and let you know how I get on… many thanks!
November 23, 2025 at 6:07 pm #494147timo75
Participantkwatt wrote:Yes, according to the info it is part number 00645701 you need.
K.
Just wanted to say thank you! I fitted the part today and the issue seems to have gone away!
many thanks for your help -
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