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Hi Do not know what the mains pressure is and believe shower is fed directly off the mains for the cold water side !! The starting point was that the shower did work for around 10 years and nothing has been changed in that time. My understanding of how the cartridge works is that if...

Boiler is a mains pressurised stored system. I have removed the cartridge and felt hot water arriving at the shower input to the cartridge . The feed is off of the bath hotwater supply and running the bath tap the water is red hot , but shower cold. So boiler functioning correctly also have had...

Hi , Help please Came into this fault late !! Mira 415 installed for over 10 years with no problems. Then only gave cold showers and not hot. Cartridge had been changed as advised ( black cartridge ). worked a few times and then stopped, i.e. just cold again. Cartridge supplier suggested...