Hydramax Shower Dripping

[RLMTS]

Looking for some advice
I am hoping you can help me with the following problem.

My Daughter lives in a Barratt's home in Abercarn S.Wales.
The shower is dripping and I believe I need to change the cartridge.

I have found replacement cartridges on the internet but I need to decide whether I need a HP or LP unit.
Is there anything that may indicate which shower type (HP or LP) would have been fitted on this estate back in 2006.
If not, is there something I can check to decide which type it is.

Barratt were unable to help us.

What would be the consequences of fitting the wrong type?

Thanks in anticipation of some advice.

 

[townfanjon]

Dont know whats going on here, i think i have just replied to this .
Barretts used to fit 'tribunes' they are unvented cylinders so you would need a HP cartridge.
If not post a oic of your cylinder or boiler

 

[townfanjon]

Oic = pic , lol

 

[RLMTS]

Hi townfanjon, yes you did reply to my 'unregistered' post. I thought the post hadn't worked so registered and posted again. Sorry for the confusion.
Thanks for your help.
I'll take a oic when I am next at the house!