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Discuss Dishwasher suddenly not draining past the u-bend in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

F

Fullpint

Hi - First time poster, hope you can help.

My dishwasher has been in place for about two years and has not had a problem until a few days ago, when I found the dishes in the cupboard full of water.

I emptied the cupboard and turned the dishwasher on, expecting a leak in the hose or the drain pipe. But no - water was gushing out of the grey polypipe and shooting up past the inserted hose.

I checked the u-bend and it's clear. I put a drain snake down and got about 4m in, all ok.

If I take the U-bend off (all the white stuff in the image) and put the dishwasher drain in the end of the grey pipe, it all works fine.

As soon as I put the u-bend back on, water gushes up again. It's like the pump is pumping too hard and the water hits the u-bend too fast and shoots back up.

The pipe is definitely clear as I have poured water in and it never backs up. Not sure what to do now. Thanks for any help.

Image:
Imgur

https://PLACE IMAGES DIRECTLY INTO POST - CLICK UPLOAD OR COPY AND PASTE THEM INTO THE POST. IMGUR IS BLOCKED./a/0sTaR72 Imgur

IMG_8257.JPG
 
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