Double trouble with shower mixer unit

[Tom lanzafame]

Greetings,
I’d really appreciate any advice on this problem, I’ve done some googling but ended up even more confused.

my problem is 2-fold:

1. the middle tap (mixer) doesn’t provide 100% cold water (always luke warm) even when turned all the way clockwise.

2. the top tap (shower selector/on-off) is losing water behind the plate into the wall…. A more serious problem.

I’m hoping to not have to replace the whole unit. Anyone happen to know if it’s a question of replacing cartridges or something? Or happen to know which cartridges, or how to find out?

much obliged in advance for any help!

tom

 

[HERTS P&D]

If you are losing water behind the wall then I would advise it would need to be removed, with tiles taken off. Always best to replace with an exposed fitting as it would be easier to replace in the future.

Andy