How can I fix my Triton Aquatronic 4 Shower?

Hi there, really hope you can help!

I have the above shower which is only 3 years old.

Recently the low pressure light is showing constantly. It seems whatever is happening is causing the shower to turn off during use. It will occasinally turn back on again after a while (but most inconvenient, as you can imagine). Whilst it's working it is also constantly dripping cold water from somewhere near where the hose is attached to the main box.

When it comes back on the water will go from either VERY hot to VERY cold. Very recently, it is just refusing to turn on altogether.

Would much appreciate any help you can give me!

Thanks,
Lisa

Lisa
August 2007