Aqualisa AquaMixa Leaking - Constant Drip?

Hi Guys,

Yet another thread about a leaking Aquamixa, I have read the relevant posts on here and I am still unable to fix the leak.

The problem, the Aquamixa is dripping from the shower head (constant), I have just replaced the cartridge (Pink) and 'O' Ring and thought that would solve the problem but it hasn't. Water is coming from the top of the Aquamixa where the shower hose attaches to the shower unit (on the bath) this causes water to run up the hose resulting in a dripping shower head. I have taken the hose off and warm water is constantly being pushed up the unit. I am unsure as to what the problem may be?

Any assistance would be great and very much appreciated

I have a combi boiler could this be the problem (high pressure)???

Kind regards

Jim