How can I mend it?

I have a redring expression shower model 53-673001 , water flows out ok but no hot water , how can this be repaired
Robert, August 2022


done
There's good support here:

https://www.showerdoc.com/redring-expressions-500s-8-5kw-53673001-shower-spares

There's provision to ask questions near the bottom of the page. Answers are from specialists and usually helpful.

Edjdj, August 2022