Glow worm smart wiring centre fault

[Nigelv68]

I have a glow worm flexi com 30HX with a climapro room stat wired from a smart wiring centre, I also have a 3 port valve.
Having had this system running faultlessly for the last 4 years has been wonderful !! .... But this year when I turned of the heating and leaving the dhw just running , I find the heating will not turn off?
So first I change the synchro as the valves old and maybe it's playing up ? Nope wasn't that ? On closer inspection the power head looks like its not operating right ? So I change this for a new one ? Still the heating is coming on with the hot water even though its turned off ?
So tonight I have whipped off the wiring centre front again , and delved further into territory I'm unfamiliar with , to find the 3 port valve has power to ch on dhw on dhw off all at once ? Which I know not to be right ? ( would also explain the obvious over heating of the previous power head )
So my question is is it the wiring centre printed circuit board up the creek or has the programmer gone up the spout .
I may add I am not an electrician but have some electrical knowledge but my trial and errors on this occasion have been to no avail ??
Can some one help ???.

 

[matt1e]

what are you using to test for voltage?
post some pictures of the wiring centre showing the connections if you can

Matt

 

[Nigelv68]

Just a neon tester

 

[Nigelv68]

Any help gratefully received here please ?

 

[mickyg]

well you are not gonna find the fault with a neon tester. You need a multimeter. also have you checked the valves not just stuck?

 

[Dan Robinson]

Just a neon tester

Probably the most useless tool ever sold.

 

[Nigelv68]

Dan , thanks for the advice ? 💩

 

[Nigelv68]

Valves not stuck as I have had the power head off and manually moved it to just heat due alone . When switching between program's the head does not change position and all ports from the wiring centre remain live ?
I'm thinking either the printed circuit board in the wiring centre has developed a fault or the programmer ?
Looks like I'm gonna have to bite the bullet and get a glow worm techi out ?

 

[Nigelv68]

Problem solved , all caused by poor connection within programmer sending wrong signal to wiring centre . Cleaned contacts tightened connection , problem solved !!!!!