Mira Combiflow random cold water

[Smarty85]

I’m after some advice.
I’ve inherited my parents house. In the process of doing it up.
My dad got a Mira combiflow installed about 15 years ago. Over the last couple of months every so often when it’s turned on the water runs ice cold even if I turn the handle to hottest temp. All other taps in the house run hot it’s just the shower that randomly doesn’t. Is this fixable or am I looking at a new shower? If fixable what could be the issue?

 

[Chuck]

IME Mira showers of that age are usually very repairable. It may just need 'servicing' for which there will be a kit of replacement seals, etc. Check the Mira website for availability. Personally, I would go for genuine Mira spares and avoid cheap 'compatible' alternatives you'll find on the internet.