24 Dec - update - Grundfos pump still runs constantly

[breadnbutter]

View attachment 155057

that cable looks like its been crushed, just after the condense pipe, in pic, I wonder if that's four core, and the perm live is shorting on the switch live, cable looks old, is it the original from old boiler.

 

[ianmcd]

that cable looks like its been crushed, just after the condense pipe, in pic, I wonder if that's four core, and the perm live is shorting on the switch live, cable looks old, is it the original from old boiler.

four core flex and perm live is shorting on the switched live ???? this post gets more worrying every time I read it, personally I have never seen 4 core flex in a boiler installation , a professional will use 5 core

 

[breadnbutter]

four core flex and perm live is shorting on the switched live ???? this post gets more worrying every time I read it,

I don't come here to critizise, but help the op, whatever core it is, are you like many that like to jump on any thing you can to start a fight.

 

[ianmcd]

not at all, and I am really sorry if you feel like that, if you read my posts I always do my best to help everyone out, best way to wire an S plan is to use 5 core, LNE then the other two wires switch the boiler cant see how you could do it with 4 core

 

[breadnbutter]

not at all, and I am really sorry if you feel like that, if you read my posts I always do my best to help everyone out, best way to wire an S plan is to use 5 core, LNE then the other two wires switch the boiler cant see how you could do it with 4 core

5 core for s plan fair enough, I was thinking combi. my point is it could be shorting.

 

[Grumpy Gasman]

personally I have never seen 4 core flex in a boiler installation , a professional will use 5 core

Seen 4 core flex used many times.
4 core to cyl stat is a common one.

 

[Grumpy Gasman]

not at all, and I am really sorry if you feel like that, if you read my posts I always do my best to help everyone out, best way to wire an S plan is to use 5 core, LNE then the other two wires switch the boiler cant see how you could do it with 4 core

LNE with the 4th core supplying 240v switched live to the Vaillant RT plug.
We use 7 core on some of the Vaillants.
LNE.
2 cores for 24 volt RT.
1 core for external alarm.
1 core supplying contactor relay for external pump.

 

[ianmcd]

been well discussed on here about using multi core with low voltage switching

 

[Grumpy Gasman]

been well discussed on here about using multi core with low voltage switching

4 core supplying boiler control board LNE and 240 volt switched live is hardly low voltage.
You said 4 core couldn’t be used and I’ve said yes it can be used.

 

[Littlemiss21]

Nothing more than a British Gas bashing thread.

Excuse me, it’s not ‘British Gas bashing thread’ at all. We’ve had BritGas homecare boiler/cover since 1992 and this is the first time that it has become an ongoing problem that they haven’t been able to solve. The Area Manager is involved now too and assured me that he will get to the bottom of it. It almost comes across that you think I am making this up. Believe you me I have better things to do than to take 6 days of annual leave from work waiting for BritGas engineers to come out. And spending hours trawling through google forums trying to learn about s plans.

 

[Littlemiss21]

I detect a reluctance from the OP to post a photo of the wiring centre terminals, this was asked previously but maybe the OP missed it?
You would of thought the OP would jump at the chance and post the photo in order to resolve “her” issue.

Thank you for your input Grunpy Gasman. Detect reluctance to post pics.

 

[Littlemiss21]

Good morning all
I’ve taken pics of spaghetti junction:

 

[bernardgreen]

Too many connections on the Switched Live to the boiler

Either the Brown or the Black goes to the Switched Live on the boiler. But where does the other one go to ?

 

[picasso]

To the pump most likely.

 

[Mottie]

Blimey, 12 pages and 179 posts so far. This thread is giving those Brexit threads a run for their money!