Question about Grohe Grohtherm Thermostatic Rough-In Valve 3/4'' Valve - 34125000

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Grohe geneva thermostatic 19616 shower too hot at

Grohe geneva thermostatic 19616 shower too hot at lowest temperature. How do we adjust the temp.

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Posted on Jan 02, 2017

  • 61 Answers

SOURCE: Install trim and adjust the thermostat on a Grohe shower faucet

the temperature adjustment dial cna be rotated when you loosen it, take a thermometer , turn the water on and set the temperature dial to the right temp, then tighten the screw holding it and you're all set

Posted on Jun 28, 2010

  • 83 Answers

SOURCE: I bought a new house

valve should have a gear like deal under handle that may need to be adjusted

Posted on Nov 22, 2010

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1 Answer

Could my grohe thermostatic shower be letting cold water into my system? Some other taps run cool but the shower is running OK temperature


If you have single handle facute one bad cartridge in the system may be acting like a mixing valve and allowing cold water to mix with hot not allowing water to get hot enough .

Mar 10, 2015 | Grohe Water Heaters

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Install trim and adjust the thermostat on a Grohe shower faucet


Before you install the temperature control knob, adjust the valve body (47111) with a wrench to set the temperature to "100 degree or close to it". Now, place the limit ring to tdc (top dead center) and control knob with the red 100-degree align to it. Your problem may have been the valve's temperature setting is out range when you installing the temperature control knob.

Jun 28, 2010 | Grohe Grohmix Thermostat Valve & Trim -...

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Grohe valve Grohtherm Thermostatic Rough 34-126 I turn the mixer to full hot but the temperature remains tepid. All the other faucets in the


The thermostatic stop is set too low. Havent set a grohe before but most other thermostatic shower valves work similar. pull off the handle(however a grohe handle comes off . . ) there should be a notched ring or stop which keeps the handle from going all the way hot. pull out the ring and turn it a few teeth hotter put back and reinstall handle try water temp and adjust again if necessary.

Jan 23, 2010 | Grohe Grohtherm Thermostatic Rough-In...

1 Answer

The temperature in my shower is very luke warm only at the shower


Do you mean the other faucets in the house are hot and only the shower is warm? If so there is an anti-scald adjustment on the faucet that needs to be turned up a few notches. Havent adjusted a Grohe faucet but most faucets you rmove the handle and behind the handle is a nothced adjustment ring that prevents the faucet from getting too hot. This ring, or stop, is pulled out and twisted clockwise(or counter clockwise to set higher or lower max temp, then pushed back. maybe you can look up grohe to see which way ring or stop adjusts for hotter water.

Jan 23, 2010 | Grohe Integrated 1/2'' Shower Thermostatic...

1 Answer

Grohe shower. I want to adjust the temp mixing valve. I can not get cold water. It is always a mix-never pure cold. I want cold water. How do I adjust it?


if you pull the handle off all the way back to the valve body there is a little black stopper around the cartridge body that you can adjust by pulling it out and sliding around the cartridge body this enables people to just turn the handle to one setting and jumpping in to their favorite temperature. in your case it doesn't allow you to have any cold water. so turn it one way see if you get what you want or try the other or some of them you can even just take the darn thing out and not even have to worry about it

Jul 29, 2009 | Grohe Integrated 1/2'' Shower Thermostatic...

2 Answers

I have exactly the same problem


you need to change the cartridge, it is a temp control and is going bad so it keeps you from burning yourself it is like a mixing valve and is givng more cold water, that way you don;t get burned,,

Jun 18, 2009 | Grohe Integrated 1/2'' Shower Thermostatic...

1 Answer

Installation problem: Grohmix shower valve 1 1/2'' extension


This is what you should have... Grohe Grohmix Thermostat Valve & Trim - 34436
  • Paraffin cartridge
  • Lever volume control
  • Grip ring temperature control
  • 1/2" NPT female connections
  • Service stops
  • Includes rough-in valve and trim
  • Integrated temperature and volume control
  • Requires Twin Ell (03 671) for shower/tub combinations with diverter spout Note:
  • Requires Twin Ell (03 671) for shower/tub combinations with diverter spout
  • Grohe Grohmix Thermostat Valve & Trim - 34436

    Mar 26, 2009 | Grohe Grohmix Thermostat Valve & Trim -...

    1 Answer

    Grohe Thermostatic Valve


    the temp, control valve is getting to hot!!! there for only let so much hot water go thru, did you take the inner parts out when soldering this in, if not you might have damaged it, and if so need to replace the cartdrige

    Feb 10, 2009 | Grohe Integrated 1/2'' Shower Thermostatic...

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