Ive been having the same issue, i closed the valve half way and it seems to have stopped happening. Seems like very high water pressure doesnt play nicely with it.

 

Seems like very high water pressure doesnt play nicely with it.

Then adjust your water pressure at the PRV for the entire house.

 

They are sending a replacement head unit, we'll see. I may also try just throttling the water pressure on that sink a bit.

 

I believe there is a design flaw of the housing of the filter. The issue seems to be related to the incoming water pressure.
If it's too high, some parts in the housing seem to be pushed to a place that will block the water flow.
I could clearly hear a click when I let less water go into the filter (by turning the tap tighter) and the water flows again.

If you unscrew the filter and let it sit for a while, the blockage will also go away.

I have not done fully the various tests that Waterdrop wanted me to do because I think most of those tests won't work permanently.
But if anyone finds anything that works, please share the trick.

Contacting Waterdrop and showed them the video clips that show the problem will convince them that there is a problem with their product.

 

I just heard from Waterdrop, they suggest reversing the filter water in and out to flush the head unit for 5 min, then rehook up and try again. I'll have to try. that later thise week. I just took the waterdop filter out of the loop for time being

 

Is there a way to check for blockages in the water filter head? My in flow is fine (and the hot water is strong)...the pressure goes to barely a drip when cold water is turned on...I'm wondering if there is a blockage in the housing - not the filter cartiridge?? I have 5 of these and having this issue with two of them.

 

Have the same/similar problem. The flex pipe shakes and there a chug, chug chug and water stops. then it works for a while, then does it again . Same water filter

 

Hello Etkunz, I got exactly the same issue. Have you eventually found out the cause and resolved the issue?

 

OK. That test that I described should be helpful.

 

Thank you for your help!

You’re welcome.

The only things I can think of is that where I had the filter mounted on the side may have been causing an issue because its height to the water inlet (see image) bc I had everything down below the water inlet when I tested it. Or, it could be the length of the lines being all hooked up initially hurt suction to push the water all the way through the filter up to the faucet? I have no idea, any idea yourself?

When dealing with house pressure water, minor elevation differences won’t make any difference (they do when discussing water drainage issues where there is no force to push the water). I don’t have an explanation as to why it works now, which makes me think that the problem will reappear. When it does, disconnect the line from the filter to the faucet and flow water into a container. That will tell you if the problem is upstream or downstream.

 

You’re welcome.

When dealing with house pressure water, minor elevation differences won’t make any difference (they do when discussing water drainage issues where there is no force to push the water). I don’t have an explanation as to why it works now, which makes me think that the problem will reappear. When it does, disconnect the line from the filter to the faucet and flow water into a container. That will tell you if the problem is upstream or downstream.

Yep, you were right! Its doing it again. I was able to flush the filter for 5min as the new filter instructions said to do and the flow was great and everything was working great. Came back and tried to use it a day later and absolutely no flow again.

 

Thank you! I will try this out and let you know what happened.

 

Are you referring to the line directly after the 3-way splitter from the cold water line (before the filter)?

If the setup that you have to split the incoming cold water line into two outlets matches what I’m imagining, then “yes”.

Would I just be looking for any flow at all through that line?

It should be flowing at full house water pressure, so it that is “normal”, then it should be flowing quite quickly, like the water that normally comes from the unfiltered faucet above.

I guess if there was flow you would want me to see if there was flow with that hooked up to the filter into a bucket as well, correct?

Yes

 

If the setup that you have to split the incoming cold water line into two outlets matches what I’m imagining, then “yes”.


It should be flowing at full house water pressure, so it that is “normal”, then it should be flowing quite quickly, like the water that normally comes from the unfiltered faucet above.


Yes

Thank you for your help! I hooked everything up once again and did the tests you recommended and everything worked perfectly all the way to the final product of water again coming out of the water filter faucet. I was SUPRISED! I have no idea why it worked all a sudden after it wouldn't work for so long even after I ripped it apart for clogs when no clogs were found. The only things I can think of is that where I had the filter mounted on the side may have been causing an issue because its height to the water inlet (see image) bc I had everything down below the water inlet when I tested it. Or, it could be the length of the lines being all hooked up initially hurt suction to push the water all the way through the filter up to the faucet? I have no idea, any idea yourself?

 

There seems to be three possible sources for the problem.

• The valving arrangement that you have to split the incoming cold water into lines that go to the two faucets.
• The filter itself
• The faucet

The test in post #8 will allow you to confirm (or not) that there is good flow from the valving setup to the water filter.
The test in post #9 will allow you to confirm (or not) that there is good flow from the valving and through the filter.
If you have good flow coming out of the filter, then the problem would have to be in the faucet.

 

Are you referring to the line directly after the 3-way splitter from the cold water line (before the filter)? I haven't done that, no. Would I just be looking for any flow at all through that line? I guess if there was flow you would want me to see if there was flow with that hooked up to the filter into a bucket as well, correct?

 

Then the next diagnostic step would be to connect the outlet of the filter to a flexible line and run into a bucket. If those two tests show that there's nothing wrong with the valving on the cold water line, and nothing wrong with the filter itself, that leaves only the faucet. That seems unlikely though, since the faucet has three inlet lines (hot, cold, filtered) so theoretically there should be no connection between hot/cold and filtered. We can't see how that separation is maintained, though, so maybe something has failed.

 

I used a splitter from the main water line in to separate the water in two directions, one to the regular faucet and the other to the water filter system on through the water filter faucet line.

Did you connect a temporary flexible line to the valve that you installed for the line to the filter, and test the flow into a bucket? That would be a good thing to do while you have things dissembled.

 

Thanks. And...

"Can you give us one or two photos of the undercounter installation (if it is still installed), so that we can understand the piping? "

 

I unhooked everything trying to troubleshoot for a potential clog but ill redo everything so I can snap some photos for you tonight. However, Its exactly like the image below shows (if that helps you at all) except the water faucet and water purifier faucet are together as a 2in1 faucet.

 

...installed it along with a new faucet that has a separate inlet for a filter line. I used a splitter from the main water line in to separate the water in two directions, one to the regular faucet and the other to the water filter system on through the water filter faucet line.

Welcome to the Chatroom.

Can you give us one or two photos of the installation (if it is still installed), so that we can understand the piping? I don't really understand what you've written above. Are you saying that there is just one faucet in this new setup and there is a control that allows you to choose when filtered and unfilterd water? If so, can you give us the details of the faucet, please.

 

Thanks Chris! Yes, I have a 2in1 faucet that allows you to have one line in for regular unfiltered water for regular sink uses via its own lever AND another line in that goes to a separate smaller/slim filtered water faucet that you can separately toggle on just filtered water.