Question about Grohe Integrated 1/2'' Shower Thermostatic Rough-In Valve With Stops - 3412

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Grohe Thermostatic Valve

I have a grohe thermostatic valve which I just installed. My problem is that once the shower is on for 5 minutes providing me with a comfortable hot shower the pressure decreased then shuts off. If I turn the thermostatic valve clockwise the flow resumes providing me with lots of cold water. When I turn the thermostatic valve counterclockwise the cold slows down and stops. This seems to occur with every shower.

I have noticed that when I turn the volume control to the off position and then turn it back on the water seems to flow properly again for about 5 minutes.

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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

Posted on Jun 06, 2009

  • Jim Weaver May 19, 2013

    This is not a solution.

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Posted on Jan 02, 2017

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