hi there just discovered this site,looks very helpful,anyway down to my problem as above,the motorised valve/twin port valve wont go to central heating on its own,everything works fine if i leave it on manual,i have replace the twin port valve,the electric motor,the flow switch and now the programmer/controler ,im running out of ideas,and as i live on an island geting someone that knows what there doing is hard,any ideas please. cheers gus
