Tony,
Thank you for your prompt response and also for sharing your expertise.
I wonder what would this type repair cost? I had it serviced 3 - 4 years ago.
Call me thick but I am struggling to even log back in to this website let alone search for a blocked plate heat exchanger...
After varying periods of time, it just cuts out!The blummin light comes on (neon lockout) and one has to push the light / button for it to work again.
Recently this seems to be getting worse, especially through the night (as the wife insists I must switch it on!!)
Joking aside, Initially...