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Thread: No water in shower, tried everything

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  1. #1
    DIY Junior Member loki993's Avatar
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    Default No water in shower, tried everything

    I am absolutely out of options here. My issue started a while ago, keep in mind this is a fully remolded house with everything new in it. The shower worked without issues for probably 6 months. The water pressure in my shower was slowly going down and down. For a while it was a bearable inconvenience , until It got so bad it had to be dealt with and eventually I am where I'm at now with no water at all int he shower. I turn the faucet on and all I get is some noise, like kind of a sucking sound, and a trickle of water. The shower is a Delta Monitor 13 series. The list of what has been done is fairly long:

    Replaced the cartridge...twice, Ran without the cartridge to blow out any debris, Checked the lines and rough out for blockage. Had a professional plumber come out and check it. He cut out the tile, checked the rough out, pulled the pex lines off and they both ran fine disconnected. Checked under the house. After all that seemingly the flow was ok to the rough out he said it had to be the water heater, couldn't be anything else, because we checked everything. Its an on demand unit. He said that the pressure on the hot side must be down enough that the balancing valve was shutting the water down so it probably needed to be descaled. So fine.

    Come to yesterday I do the descale. Still no water in the shower. At this point I have absolutely no idea what to do. I'm out of options here aside from ripping the whole brand new shower out or changing the brand new water heater out. Neither of which may fix the problem.

    A word of note that I found curious in this whole thing. I've ran a cartridge with the guts taken out, the balancer and all that removed and also the plumber ran a test cap in place of the cartridge. I still got no water either time when that was done. I find that a bit curious since that is eliminating what is supposedly causing the problem.

    A lot of people are stumped on this one here. Any ideas before I have to start getting drastic?

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    Plumber jimbo's Avatar
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    Have you ruled out a clogged shower head??

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    Moderator & Master Plumber hj's Avatar
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    You have NOT tried "everything, because if you had, you would have water in the shower. Given what you describe about the plumber, it looks like he is guessing and hoping eventually something will work. It would be easy to rule out the water heater by opening a hot water faucet in the sink and checking the pressure while the shower is turned on. Everything you describe could be caused by some condition at, or in, the shower valve, but I would have to be there to check it out. One problem that can occur with a shower only valve installed as per the manufacturer's instructions is that "debris" can build up where the "tub" opening was capped off and that will shut off flow to the shower head. It can be fixed, but there is not, and probably never was, any reason to "cut the tile". This possiblity is the reason I try to install shower only valves "upside down" so the water flows directly to the shower head instead of going down to a "dead end" and making a "U turn" back up to the shoer.
    Licensed residential and commercial plumber

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    DIY Junior Member loki993's Avatar
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    Quote Originally Posted by jimbo View Post
    Have you ruled out a clogged shower head??
    Im not even getting water to the faucet so the shower head isnt the issue.

    Quote Originally Posted by hj View Post
    You have NOT tried "everything, because if you had, you would have water in the shower. Given what you describe about the plumber, it looks like he is guessing and hoping eventually something will work. It would be easy to rule out the water heater by opening a hot water faucet in the sink and checking the pressure while the shower is turned on. Everything you describe could be caused by some condition at, or in, the shower valve, but I would have to be there to check it out. One problem that can occur with a shower only valve installed as per the manufacturer's instructions is that "debris" can build up where the "tub" opening was capped off and that will shut off flow to the shower head. It can be fixed, but there is not, and probably never was, any reason to "cut the tile". This possiblity is the reason I try to install shower only valves "upside down" so the water flows directly to the shower head instead of going down to a "dead end" and making a "U turn" back up to the shoer.
    Tuche, I've tried everything I can think of. As for the plumber yeah I'm not sure, I think he was guessing because no one seems to have any idea of whats causing it. It was a homeowners warranty job so I dont know if that makes any difference. He cut the tile because there was no other way to get to the lines that go to the rough in to check them. I have a straight pex run under the house from the water heater to the shower. there are no shut offs, so the only way to make sure I had pressure at the rough out was to pull the lines.

    I didn't see what he did when he was in there but he said the way it was acting seemed like the valve was in upside down, but it was odd because it had worked for a while, he said it shouldn't work at all of it was upside down. It wasn't upside down but I think he may have flipped it just to be sure and then put it back obviously.

    I'm trying to think of what else he tried.

    Also its not a shower only valve, sorry if I made it seem that way. Its a faucet and shower. So I guess when I say no water in the shower I'm really saying I have nothing at the faucet and then obviously if there is nothing at the faucet there isn't enough pressure to push up to the shower either.

    I mean to me it seems like it could be the valve too but without the cartridge it just seems like a brass fitting with not much to it. Also if I run the water without the cartridge I get water from the valve, though I have no idea how much pressure it is. I mean it seems like its coming out of it good but who knows.

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    DIY Junior Member loki993's Avatar
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    Quote Originally Posted by jameswade View Post
    why dont you try getting a professional in to help. If you arent 100% sure what it is you dont want to end up doing something wrong and breaking it.

    I found this site to have a number of decent plumbers
    I had a professional come and he couldn't figure it out, so I'm reluctant to spend money that I don't have for a guy to come and spend hours, while charging me, to search for a problem. Its nothing I cant handle its just finding the actual cause of the problem is whats proving difficult.
    Last edited by Terry; 11-26-2012 at 11:34 AM.

  6. #6
    Moderator & Master Plumber hj's Avatar
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    quote; Ran without the cartridge to blow out any debris,
    quote: Im not even getting water to the faucet

    One of those two statemenst is incorrect because they are diametrically opposed.
    Licensed residential and commercial plumber

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