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spartacus72 · Sep 6, 2009, 06:24 AM

Hi all,

My thermostatic shower only has a constant temp which is just above lukewarm! Recently I had to replace the pipe to the shower head as I found the reason the pressure was poor and the shower was too hot was due to a leak in the pipe.

Since fixing this however the temp has remained steady with it neither going up or down whichever way I turn the temp gauge. I am unsure of the make or model bu it has a faceplate with two twisting valve one for turning water off and on and one for temperature with a further point at which the pipe to the shower head is connected.

Any help would be gratefully received as my cold hearted wife needs a daily hot shower to reduced further chilling! Lol!

massplumber2008 · Sep 6, 2009, 06:56 AM

Hi Spartacus:

You must have disassembled the trim to the shower valve to work on it... yes? IF so, then it is likely that you installed a part back incorrectly at the temperature knob.

If you can get us a name brand or a picture we may be able to tell you more. There are simply too many mixing valves out there for us to guess on which one you have.

Start by going to google.com and clicking on images at the search bar... Type in GROHE thermostatic mixing valve to start (most common type) and see if any look like your valve. If so, see if you can copy a pic. And then post it here.

Good luck!

MARK

spartacus72 · Sep 6, 2009, 07:02 AM

Thanks for getting back and I'll try to upload a pic, I only had to unscrew a pipe with casing and screw new one on previously as the valve controlling water allowed me to have water off before working on it.

I have tried to check the temp valve and have just taken it off and turned the control manually up and down and I'm not getting any change in tep at either end!

massplumber2008 · Sep 6, 2009, 07:05 AM

It's possible that the thermostatic control is defective. Post a pic. If possible.

MARK

spartacus72 · Sep 6, 2009, 07:14 AM

I've included two pics if they not what you need give me a description and I'll sort out what's best!

Thanks

massplumber2008 · Sep 6, 2009, 07:17 AM

Hmmm... not familiar with that one, for sure. We do have an expert here that seems to know a lot more about these fancy valves so give him some time to pop in and see what he comes up with. His name is MILO... usually pops in every day or so.

Finally, if no answer from him by Tuesday (Monday is holiday) I'll check in with my plumbing supply company and see if they can come wup with a name brand.

Check back periodically, I'm sure we can help here.

MARK

spartacus72 · Sep 6, 2009, 07:18 AM

Cheers Mark

khinanight · Sep 13, 2009, 09:54 AM

You did not mention If this was a new install. If it is then the valve might have been install backwards or the stops have not been opened up all the way. Also was the temperature calibrated?

spartacus72 · Sep 17, 2009, 01:31 PM

It's not a new install, been in for about four years! Was working, we think right up to pipe being fixed but with pressure so low due to leak it might not have been working right for a while!

Widdershins · Sep 17, 2009, 07:03 PM

That looks like a Dornbracht thermostatic valve.

You need to remove the lower handle and turn the stem to the left with a pair of pliers or channel locks until the temperature of the outflow measures 100 degrees (use a meat thermometer to check the temp) and then reinstall the handle with the 100 degree marking pointed straight up.

spartacus72 · Sep 20, 2009, 12:18 PM

I had already thought this and have tried it. Moving the stem around doesn't change the temperature either hotter or colder.