mira shower fault

[the_pasty]

Hi everybody
I have a Mira Zest shower which seems to have a temperature regulation problem. It either runs stone cold or boiling hot with no in-between. Does anybody have any clues as to what the problem could be?
Thanks.

 

[nozspark]

How old is it??

 

[the_pasty]

unforunately its just over 2 years old so out of guarantee

 

[stargazer]

Could be a flow valve problem.
I recall Mira had an issue with a batch of faulty flow valves, but the main symptom was that the shower howled like a banshee when it was turned on.
Is your shower making any unusual noises?

 

[seco services]

run the shower with the shower head off and the hose hanging straight down. whats it do then ?