Trident Spellbind fluctuating pressure/temperature

[Suspire]

Hi,
I am having trouble with a 3 year old Triton Spellbind.
We generally have the temperature set at approximately 40c but just recently the water pressure drops after a minute or two followed by the temperature plummetting to 25c followed by it rising to 55c then settling back at 40c. This then happens repeatedly every minute or so.
We live in a very hard water area so I don't know if limescale build up could be to blame - I've emptied the scale trap and there was no discernable difference.
Although the pressure seems to drop from the shower there seems to be no mains pressure drop on any other outlet around the house. I've also found that the shower runs fine in "Eco" mode.
Is this indicative of a particular part failing that I could replace or is it a case of replacing the whole unit?
Thanks for your time reading this.
Regards, Nathan.

 

[seco services]

check the inlet filter first.

 

[Suspire]

check the inlet filter first.

Thanks for the very quick response....

I've just cleaned the inlet filter - there was nothing much in there and unfortunately cleaning it had no effect.

Cheers, Nathan.

 

[Dan Robinson]

Are you going to spam every "crap shower " thread with how you totally failed to fix the problem?