Thanks again for this advice - I bought the RC Device part and fitted as described above - works like a charm - no problems at all since.
I've noticed that the Honeywell valve is much better than the Siemens one it replaced - with the old one the upstairs radiators got warm with just the CH on...
Thanks Gas2Air, great advice. I've searched around and found this part for sale in a few places.
I've found a discussion on ukplumbersforum that mentions it and how to fit it - "this is fitted between Switched Live and Neutral (the leads either way round)" - also "switched live (3rd on RHS on...
Hi,
I'm new to these forums but have had a lot of good advice from them over the years. I'm comfortable with a lot of DIY but I'm quite happy to call in the professionals when needed.
I have a fully pumped sundial Y plan system in a small house (6 rads).
Boiler is a Worcester Greenstar 15Ri...