Ok, just an update here as to what the problem was when I posted last week about the warm/cold rads problem we had.
We had a guy from BG to come and look at the boiler (Ariston Genus 27) and he said it was the pump or heating sensors, which he duly ordered and came back on Monday to fit. Whilst fitting the new pump he told me that the diverter was clogged solid with corrosion, and a new one was needed. This was fitted today and we now have both hot water and hot rads all around the house.
So the boiler should last us another good few years now, we hope!
We had a guy from BG to come and look at the boiler (Ariston Genus 27) and he said it was the pump or heating sensors, which he duly ordered and came back on Monday to fit. Whilst fitting the new pump he told me that the diverter was clogged solid with corrosion, and a new one was needed. This was fitted today and we now have both hot water and hot rads all around the house.
So the boiler should last us another good few years now, we hope!