Question about Grohe Grohmix Thermostat Valve & Trim - 34436

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The Plumber just replaced mu Grohe Valve # 47025000, and the temp adjustment is not correct. There is not enough cold water adjustment. How do I adjust the valve?

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gary1121
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SOURCE: hOW TO ADJUST A MODEL 34122 gROHE VALVE

there should be a flat head screw on the mixing valve turn the water on and turn it to the desired temp,, it is letting to much cold water in , if this does not work replace the mising valve

Posted on Jun 06, 2009

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snap101
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SOURCE: grohe shower

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

Posted on Jul 29, 2009

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Hi,

If the hot and cold are fitted the wrong way round then the thermostat on the shower unit cannot operate properly!

Most thermostatic mixer showers have a 'bi-metallic' thermostat, if you supply the hot to the cold and vice versa IT WILL NOT WORK.

It is like wearing the left shoe on the right foot and the right on the left! It doesn't work.

Re-install the hot and cold to the correct supply, and this will sort it.

I hope this helps.

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1 Answer

HOW TO ADJUST A MODEL 34122 gROHE VALVE


there should be a flat head screw on the mixing valve turn the water on and turn it to the desired temp,, it is letting to much cold water in , if this does not work replace the mising valve

Apr 11, 2009 | Grohe Grohtherm Thermostatic Rough-In...

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