Aqualisa Shiraz(700) O-ring or/and Cartridge?

The concealed shower no longer gets really hot when turned to high temp. position.Could this be the rear O-ring leaking rather than the cartridge .. if so is it a standard size or Aqualisa only and how could I check before opening?

If it turns out to be cartridge .. shower is fed by a Stuart Turner pump for both H and C supplies .. feeding shower plus shower, basin and WC in loft conversion so it packs a punch .. what colour cartridge?

Thank you.
Asked 9 years ago by Anonymous

 If you have problems with the temperature then it is likely to be the cartridge however first I would check that the inlet filters on the pump are clean and clear.

It will be a grey cartridge you require 

Answered 9 years ago by Anonymous

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