I have a thermostatic cartridge in an Aqualisa Aquarian shower and water does not come out of the shower head when you turn it on. Water does however leak from the temperature knob side. There is not a great deal of resistance felt when tuning the on/off knob. Anybody know if these units can be repaired or will I have to buy a replacement?

Bill, June 2008

cartridges are available from National shower spares, 0845 126 4141,

gary, June 2008