Radiators always hot

[kennyd1965]

Hi all
My problem is that the radiators in my flat are constantly on. I have a honeywell mid position valve which is controlled by a siemens RBW29 programmer. The original programmer was a Glowworm Mastermind. When i replaced it i noticed that there were only 4 wires to the back plate Live and Neutral and Yellow and Red these two wires go to C/H ON and H/W ON! Should i have a nother wire? Hot water is ok does this mean the valve is in the mid position and not closing the C/H side of the valve.Any ideas? Thanks

 

[cider]

if on a y plan and only have 2 wires to programmer ( 1 hw on and 1 ch on then you have to run the programmer on gravity mode (meaning ch on only when hw on) unless you run an extra wire to hw off!

 

[gas4you]

Search on here for Y plan. Wiring digrams have been posted many times

 

[kennyd1965]

if on a y plan and only have 2 wires to programmer ( 1 hw on and 1 ch on then you have to run the programmer on gravity mode (meaning ch on only when hw on) unless you run an extra wire to hw off!

If i switch the programmer to Gravity rather than Fully pumped will this stop the rads coming on when HW only is selected but come on when CH is selected ?