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Ok, thank you very much, for your time and support.

I have switched between various programmes. Most of the time I hear one click but I heard 3 clicks when it was moving from HW to CH Is the valve head that white equipment in the photo below? . The valve is 3 way Drayton, you are correct.

Ok, thank you. Does the wiring seem correct?

No problem at all, thank you for your support. I changed the program from HW only to HW & CH and finally to CH only and checked if the black small pin under the valve is moving accordingly. It moves to the correct position. I took the photo of wire box. Please see the photo attached.

Thank you very much for the replies. I have no idea how to and what to check for wiring (like which wire should be going to where etc.) . I will search it. I assume there might be some topics related to that.

Yes, ıt was working fine. Actually it started failing after the motorized valve replacement. Valve was not working properly. I got it replaced. I noticed the problem after a couple days after the replacement but I am not sure if it was like this right after the replacement. Maybe new valve was...

Thank you very much for the replies. How can I check if it is wiring or microswitch inside the valve? How can I check them?

Hi All, I have problem with my heating system. I have Vaillant ecoTEC plus 415 boiler which is connected to Drayton LP822 programmer. The problem is; boiler is not firing for central heating only. If I want cental heating to turn on, I need to turn the hot water on as well. Hot water only is...