Back wash

[Barry J]

I have an above ground pool with a sand filter, I noticed that when on “filter” setting that there is water coming from the “backwash” valve outlet
Any suggestions
Thanks Barry

[Pappy]

I don't have your answer, but if you post the valve brand and model number, you have a much better chance of getting a useful answer. Posting detailed might help too.

http://www.poolforum.com/pf2/showthread.php/29084-How-to-Post-Photos-on-PoolForum-(2018) tells how to post pics.

[Barry J]

It is a Jacuzzi L190 sand filter , the valve is part number 39-2628-03 7 position dial valve

[Pappy]

I'm not familiar with that filter, but here's a link to the manual.

https://www.psposeidon.com/uploads/libraries/secured/fr/jacuzzi-sand-filter-owner-manuel-dinstallation-anglais-20150123132955.pdf

Seems to suggest a bad o-ring. Sorry I can't help more, maybe someone else can.