grohe shower

We have a single power pump feeding two showers. when one of the showers is on, the other shower leaks a fair bit (water comes fro shower head). The main consequence is a lack of flow to the Shower being used. The ‘leaking’ shower is a Grohe bar control - not sure what model but about 7 years...

Hi all In my shower I have this unit. We realized that all water system in the house is not warm as the boiler temp. After shut off the water to the shower the temp in all our valves rase up and work normal. My understanding is that I have a leaking in the grohtherm between the cold an hot...

Have renovate by en-suite and acquired a Grohe Avensys Modern Concealed Shower Mixer 34224 off ebay. Very nice piece of kit The shower is fed from a combination boiler and mains cold supply. At first you could still just about get the shower hot enough but only by turning the on-/off lever back...