Thanks for your help on this. However, it turns out it was a blocked heat exchanger after all. Once that was cleared out everything is working like normal again.
Thanks - I will give this a go.
Something else to add:
I should have said that both the shower and boiler have been in place since 2023 and this is a new issue that is happening. So it's been fine until recently.
I've also notice that after myself and my wife has showers one after each other...
Thank you for replying. I appreciate your suggestion, but what I don't understand is why I would need to do this, when it's been fine on the flow rate for the las 2 1/2 years. The change in the Thermostatic shower was only because it was leaking and it was replaced like for like. So the...
I've got a situation where a Mira Thermostatic shower starts off at the right temperature but during the course of it being on it gets cooler. Not cold, but gradually gets colder. If you turn the shower temperature up it gets hotter, but then the temperature starts to reduce again. I get...