CH/HW Programmer - Help needed!!

[powerfulpeanuts]

Hi guys,

i will be eternally grateful if someone could help me out - as been working on this problem for weeks, tearing my hair out with it!

basically i cannot turn on my hot water without my central heating being on also at the same time. i have dual channel EP 2000 potterton programmer and a 3 way honeywell motorised valve.

i suspect the motorised value does not move automatically - the CH only comes on, when it is moved manually.

i did change the programmer also so i'm unsure if my wiring is maybe the problem, as i did my best .

i'm looking to be able to turn on the HW and CH independent of each other and get my motorised valve moving.

One thing i notice on other posts where they have wiring diagrams is a white wire, which i don't.

Thanks again - any advice or tips greatly appreciated.

 

[heatingeng]

if it started when you changed the clock then it sounds like you have wired it wrong.

 

[Hugh Jaleak]

This: http://www.octaveblue.co.uk/c_heating/ is an excellent reference to how the wiring should be working. Wiring diagrams available on Honeywell site though you may have to register to view.