Hi all, Ive always changed like for like showers. On this occasion i changed a Thermostatic (Hot & Cold Feed) for a standard electric shower (cold feed only). So im assuming im missing something. I cant remember the KW rating on the old unit. And the water feed was taken from a branch off an existing pipe. I bought a Triton Erich 10.5KW, and for some reason its not operating as it should. I seem to get a few gentle supply of water out the hose, but no pressure or no heat. There is a HUMMMM like noise, power light is on. I can only assume its to do with the water pressure. Would it be best for me to get one that has a reduced KW rating, and one that uses for exmple 0.7bar pressure. Its defiantly not the new unit as i swapped it for a new one thinking the unit was faulty, but encountered the same issue. Any help would be great.