The problem is, not much pressure when shower is first turned on... then after a minute or so the water is extremely hot even when temp guage is set to cold. Then I can hear a click from the unit then the water runs cold and this sequence is repeated again and again, as mentioned with not much pressure, please can someone help to resolve this situation? Many thanks.

allan, November 2010

Fluctuating temperature or reduced flow rate

http://www.gainsboroughshowers.co.uk/Customer-Services/Mixer-Shower-FAQs/#q4102

Jscott, January 2011

Have you checked the filter,if so the valve will be u.s. and can only be repaired by buying a new shower, you can purchase just the "engine" instead of a complete shower

steve.e, November 2010