Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

6 is call for heat for hot water
Oh! Then it definitely isn't wired up correctly. Should I move them one step to the right? Here's the other end of that cable in 4 and 5. It literally isn't connected to anything. I don't know if it has come loose or what, but surely this is the reason why it is working? Now the question is, where do I connect these? Thanks a lot for the help. Really appreciate it!

wires1.png
 
Last edited:
You cannot do that job over a forum or the phone mate. Looking at the picture of the junction box it doesn’t look wired in as standard. Needs a clued up heating engineer to wire it in correctly. I know you wasn’t happy before when I/we questioned your sparky and engineer but sadly our experience tells us that this is quite common. Hope that you get sorted mate
 
  • Like
Reactions: pufferfish91
You cannot do that job over a forum or the phone mate. Looking at the picture of the junction box it doesn’t look wired in as standard. Needs a clued up heating engineer to wire it in correctly. I know you wasn’t happy before when I/we questioned your sparky and engineer but sadly our experience tells us that this is quite common. Hope that you get sorted mate
Thank you. It wasn't necessarily folk questioning the electrician; it was the comment that said get a new electrician and plumber without any reason why. That comment wasn't really of any use however, once the reasons were explained, it made more sense.

Thank you. I'll just have to get someone you specialises with heating and themostats in particular and go from there. At least we now know what the cause is (hopefully). Thanks to everyone for your input!
 
  • Friendly
Reactions: Harvest Fields
Thank you. It wasn't necessarily folk questioning the electrician; it was the comment that said get a new electrician and plumber without any reason why. That comment wasn't really of any use however, once the reasons were explained, it made more sense.

Thank you. I'll just have to get someone you specialises with heating and themostats in particular and go from there. At least we now know what the cause is (hopefully). Thanks to everyone for your input!
Where about are you in the world?
 
  • Like
Reactions: pufferfish91
Oh, nice. I'm not far from Mallusk if that narrows it down a bit. I might call in your services if you're available? Appreciate it, cheers! 🙂
 
Ok, so after closer inspection the wires are connected to 5 and 6, not 4 and 5. Sorry about that. 6 I understand is the call for heat and this appears to go back to the boiler. 5 is not connected to anything on the terminal block. The valve gets power from somewhere for sure but what I don't understand is, what wire sends the signal to the valve to open from the Nest control box? It could still be a faulty valve I suppose provided the call for heat connection is going to the boiler. I can hear the Nest box click when I request hot water but the valve does nothing. Thanks!
 
Thanks. Wire 6 on mine appears to go back to the boiler and not to the valve, so I guess that is incorrect then?
 

Official Sponsors of Plumbers Talk

Similar plumbing topics

L
Replies
1
Views
877
Central Heating Forum
Deleted member 120897
D

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.