Recent content by V2brett

Thanks for your reply, i will test this out again and get it looked at. Cheers Brett

hi there, i have a honeywell 3 port valve on my system. My question is what should happen if both Ch and Hw are on and then the Ch is satisfied leaving demand for Hw. It would appear on mine that whilst the Hw demand is still called for my radiators get hot. If i just call for Ch or Hw on...

hi guys we have the above fitted on our house which is a y plan system with hw cylinder. The boiler works great the only issue is everytime the ch fires up we get a bass/humming/phone vibrating noise which happens 3 times in a sequence lasting approx 5 seconds, then once the boilers fired...

Well just thought stuff it and swapped the brown wire black tape and blue wire over in the programmer and hey presto all is sorted. I can only guess the previous home owner who was a technophobe and diy superstar switched back to this old programmer when moving out and got the wires crossed...

Hi sorry for the delay in my reply what with moving in and working only over the christmas break have i managed to study the wiring and get to know the system. The system compromises of a worcester greenstar ri boiler,horstmann z332 3 port valve, honeywell tank stat, honeywell st6400c programmer...

Hi everyone, Weve just moved into a new house which has a conventional heating and hot water system with a tank controlled by the above. The hot water slider on the 6400c doesn't fire the boiler unless the heating slider is on the 'cont' position. Now this is fine as I understand when a...