Granted the shower has been in the house for 12 years.
Only get red hot water or turn the thermostatic control a bit and you only get cold water.

Can someone help me, please?

How do you find the part number and series/model?

Can you do it without taking the part completely out from the wall?

Stuart Liverpool, June 2008

Thanks for your reply.

It's on a combi boiler system.

stuey, June 2008

mira 88 is not a thermostatic shower only a standard mixer valve.

is it on a combi boiler or gravity system?
it doesn't sound like a shower fault as these are a basic mixer valve

hi-spec plumbing & heating, June 2008