3 port motorised valve wiring question.

[Dalminty]

The other possibility is is the programmer is set up correctly but there’s a problem with cylinder stat or call from cylinder stat stat to boiler live, maybe a lose wire? Yes CBW this really needs a competent engineer as there’s only so much we can do from a screen on a phone or computer lol

Thanks everyone.
I will try and make explaining a little simpler.
Before I fitted the new Valve head,when sliding the CH on it would not fire the boiler up so I had to slide the HW along to ignite the boiler.
Now after changing the valve head.
I slide the HW to on and it does not fire the boiler the same as it used to.I then slide the CH switch along and it fires the boiler.
This is what makes me think the problem is with the valve wiring as I have not touched the programmer,
Cheers Dal

 

[Burger]

Thanks everyone.
I will try and make explaining a little simpler.
Before I fitted the new Valve head,when sliding the CH on it would not fire the boiler up so I had to slide the HW along to ignite the boiler.
Now after changing the valve head.
I slide the HW to on and it does not fire the boiler the same as it used to.I then slide the CH switch along and it fires the boiler.
This is what makes me think the problem is with the valve wiring as I have not touched the programmer,
Cheers Dal

Ok Dal, let’s try and break this down: at any point were you able to have separate heating, separate hot water or both (mid position)? Obviously you have a wiring fault,but could have always been like that including the programmer. If you are like me and stubborn until it’s fixed then providing you can work safely maybe check this out:

Y Plan central heating system

 

[Dalminty]

Ok Dal, let’s try and break this down: at any point were you able to have separate heating, separate hot water or both (mid position)? Obviously you have a wiring fault,but could have always been like that including the programmer. If you are like me and stubborn until it’s fixed then providing you can work safely maybe check this out:

Y Plan central heating system

Thanks CBW.I could have seperate water,but when ever I put the heat on the water would have to be on to start the boiler.

 

[SJB060685]

I’m not familiar with these corgi branded valves unfortunately. I was under the impression that the levers are for system filling and not a switch to bring on boiler? As CBW has linked, check that out. Also like he said have you ever had independent control?
In the wiring centre how many wires are in the connector with the orange boiler live?

 

[Dalminty]

I’m not familiar with these corgi branded valves unfortunately. I was under the impression that the levers are for system filling and not a switch to bring on boiler? As CBW has linked, check that out. Also like he said have you ever had independent control?
In the wiring centre how many wires are in the connector with the orange boiler live?

Thanks SJB.I am going to have a good look at the wiring and report back to you all with what I find.
Thsnk you all for your time.Much appreciated.

 

[Dalminty]

Ok Dal, let’s try and break this down: at any point were you able to have separate heating, separate hot water or both (mid position)? Obviously you have a wiring fault,but could have always been like that including the programmer. If you are like me and stubborn until it’s fixed then providing you can work safely maybe check this out:

Y Plan central heating system

Thanks CBW.I will have a good look at the wiring and report back to you.Much appreciated for your time.
Dal

 

[SJB060685]

Let us know what you find. I’m a bit busy for a an hour or so now but CBW and the others who commented can help. Before I go for now you say the old valve wouldn’t give CH without HW, that sounds like the second switch had packed up (assuming it’s the same principle inside as a Honeywell).

 

[Burger]

I’m not familiar with these corgi branded valves unfortunately. I was under the impression that the levers are for system filling and not a switch to bring on boiler? As CBW has linked, check that out. Also like he said have you ever had independent control?
In the wiring centre how many wires are in the connector with the orange boiler live?

Let us know what you find. I’m a bit busy for a an hour or so now but CBW and the others who commented can help. Before I go for now you say the old valve wouldn’t give CH without HW, that sounds like the second switch had packed up (assuming it’s the same principle inside as a Honeywell).

I think someone quoted earlier that they are similar to Honeywell.

Dal, did you try the link I sent earlier regarding the Corgi valve? https://www.banicocontrols.com/uploads/media/instruction_954311.pdf

Either way, let us know how you get on. Ciao for now.

 

[SJB060685]

CBW you’re a legend, I’ve screenshot that info

 

[Wbjimmy]

If you decide to try different wiring combinations in your connector box make sure your programmer is independently fused with a 3amp fuse! I incorrectly wired a replacement three way valve and fried mine because it had a 13amp fuse.