In an earlier contribution to this discussion,
Dean Cox   wrote:


> Update! Still not working!! The PCB has been checked and is ok.
>
> I have since put a link in the block terminals to bypass the switched
> live (as per diagram http://tinyurl.com/77to3 ) and it fires up and
> the pump runs!


Do you mean the link from 9 to SL?

Does this diagram extend further to the left, to show any internal
connections? If so, can you scan and post this bit?

So I woould deduce that the boiler stat/air pressure

> switch etc works. This wouls suggest that the SWL doesn't, however
> whwn I switch the timer on i get 240v on the SWL????
> The only thing I am unsure of is that in the diagram it shows another
> wire from the switch going to terminal 9which I don't appear to have,
> but given that it was working I can only assume that it is not
> needed?


It looks as if 9 should be permanently live (via link on LHS of block). You
should have *either* a link from 9 to SL (which makes SL permanently live)
*or* an external switch/timer/whatever between these two points. If the
timer gets its live feed from somewhere else, it doesn't *have* to come from
9. The important thing is that the timer must feed a live signal back to SL
when it's on - 'cos it's SL which makes everything happen.

Sorry, not quite sure what the photo shows - so I can't comment on that.


-- 
Cheers,
Set Square
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In message , Set Square  
writes

>> I have since put a link in the block terminals to bypass the switched
>> live (as per diagram http://tinyurl.com/77to3 ) and it fires up and
>> the pump runs!
>
>Do you mean the link from 9 to SL?
>
>Does this diagram extend further to the left, to show any internal
>connections? If so, can you scan and post this bit?
>

As It was me who tested it ...

Looking at the diagram, it looks a bit suspect to me

For info IIRC

Orange is Perm live
Brown is SWL
Blue is Neutral
Purple is Pump live

Brown (which becomes Orange) and Blue seem to be connected together. 
Repost the rest of the diagram (I'm at home and don't have access to the 
originals)

The pcb does what it should when on a test rig, and when I told Dean to 
connect the perm live and switched live to mains in and connect the 
yellow and white wires (overheat stat) together, the pcb brought the 
pump on.

I can only deduce that there is either a problem with the wiring on the 
connector block or that the time switch is not working. This can be 
shorted out by the asterisked link


-- 
geoff

"raden"  wrote in message 
news:+PdUvWSHDJKDFwRh@ntlworld.com...

> In message , Set Square  
> writes
>>> I have since put a link in the block terminals to bypass the switched
>>> live (as per diagram http://tinyurl.com/77to3 ) and it fires up and
>>> the pump runs!
>>
>>Do you mean the link from 9 to SL?

Yes


>>Does this diagram extend further to the left, to show any internal
>>connections? If so, can you scan and post this bit?


I've updated both pictures diagram is at http://tinyurl.com/77to3

It does look a bit confusing re the colours as the br at the bottom looks as 
if it is going into the second terminal up, however it is blue and the br 
refers to the wire above (I think!). The photo http://tinyurl.com/9odss is 
also rotated to match the drawing.

I get 240v on SWL when the timer calls for it.  No wire coming into 
externally.



> Orange is Perm live
> Brown is SWL
> Blue is Neutral
> Purple is Pump live
>
> Brown (which becomes Orange) and Blue seem to be connected together. 
> Repost the rest of the diagram (I'm at home and don't have access to the 
> originals)
>
> The pcb does what it should when on a test rig, and when I told Dean to 
> connect the perm live and switched live to mains in and connect the yellow 
> and white wires (overheat stat) together, the pcb brought the pump on.
>
> I can only deduce that there is either a problem with the wiring on the 
> connector block or that the time switch is not working. This can be 
> shorted out by the asterisked link


Thanks

Dean

In an earlier contribution to this discussion,
Dean Cox   wrote:


> "raden"  wrote in message
> news:+PdUvWSHDJKDFwRh@ntlworld.com...
>> In message , Set Square
>>  writes
>>>> I have since put a link in the block terminals to bypass the
>>>> switched live (as per diagram http://tinyurl.com/77to3 ) and it
>>>> fires up and the pump runs!
>>>
>>> Do you mean the link from 9 to SL?
>
> Yes
>
>
>>> Does this diagram extend further to the left, to show any internal
>>> connections? If so, can you scan and post this bit?
>
> I've updated both pictures diagram is at http://tinyurl.com/77to3
>
> It does look a bit confusing re the colours as the br at the bottom
> looks as if it is going into the second terminal up, however it is
> blue and the br refers to the wire above (I think!). The photo
> http://tinyurl.com/9odss is also rotated to match the drawing.
>
> I get 240v on SWL when the timer calls for it.  No wire coming into
> externally.
>

So where is the timer? And how does its output get to SWL? Maybe something
is hidden behind the perm mains supply cable - which appears to be folded
back in the photo?
-- 
Cheers,
Set Square
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In message <dgca06$og4$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>, Dean Cox 
 writes

>
>"raden"  wrote in message
>news:+PdUvWSHDJKDFwRh@ntlworld.com...
>> In message , Set Square 
>> writes
>>>> I have since put a link in the block terminals to bypass the switched
>>>> live (as per diagram http://tinyurl.com/77to3 ) and it fires up and
>>>> the pump runs!
>>>
>>>Do you mean the link from 9 to SL?
>
>Yes
>
>
>>>Does this diagram extend further to the left, to show any internal
>>>connections? If so, can you scan and post this bit?
>
>I've updated both pictures diagram is at http://tinyurl.com/77to3
>
>It does look a bit confusing re the colours as the br at the bottom looks as
>if it is going into the second terminal up, however it is blue and the br
>refers to the wire above (I think!). The photo http://tinyurl.com/9odss is
>also rotated to match the drawing.
>
>I get 240v on SWL when the timer calls for it.  No wire coming into
>externally.


Right - that makes more sense . I didn't think it could be so wrong.

If you connect live and swl to mains in - then it works

The only difference with the diagram is that switched live comes via 
either the link or the time switch contacts. ISTR that if you put the 
link in it also works. Therefore, you must have a problem with the timer 
contacts or the wiring to it

Err ...

that's it really


>
>
>> Orange is Perm live
>> Brown is SWL
>> Blue is Neutral
>> Purple is Pump live
>>
>> Brown (which becomes Orange) and Blue seem to be connected together.
>> Repost the rest of the diagram (I'm at home and don't have access to the
>> originals)
>>
>> The pcb does what it should when on a test rig, and when I told Dean to
>> connect the perm live and switched live to mains in and connect the yellow
>> and white wires (overheat stat) together, the pcb brought the pump on.
>>
>> I can only deduce that there is either a problem with the wiring on the
>> connector block or that the time switch is not working. This can be
>> shorted out by the asterisked link
>
>Thanks
>
>Dean
>
>
>
>


-- 
geoff

>>>>> I have since put a link in the block terminals to bypass the
>>>>> switched live (as per diagram http://tinyurl.com/77to3 ) and it
>>>>> fires up and the pump runs!
>>>>
>>>> Do you mean the link from 9 to SL?
>>
>> Yes
>>
>>
>>>> Does this diagram extend further to the left, to show any internal
>>>> connections? If so, can you scan and post this bit?
>>
>> I've updated both pictures diagram is at http://tinyurl.com/77to3
>>
>> It does look a bit confusing re the colours as the br at the bottom
>> looks as if it is going into the second terminal up, however it is
>> blue and the br refers to the wire above (I think!). The photo
>> http://tinyurl.com/9odss is also rotated to match the drawing.
>>
>> I get 240v on SWL when the timer calls for it.  No wire coming into
>> externally.
>>
> So where is the timer? And how does its output get to SWL? Maybe something
> is hidden behind the perm mains supply cable - which appears to be folded
> back in the photo?
> -- 


There is a wire that I guess comes from the timer and into the SL 
connection. It shows no voltage when the timer is off and 240v when it is 
on. In the diagram it seems to suggest that it needs a wire going in to the 
connector marked 9. However I do not apear to have such a cable ,but it does 
not look like there ever was one, and it worked previously! But thats the 
only thing I can think of. Given that putting a link between SL and 9 gets 
the pump going, but putting a live 240v into SL does not.

Dean

Dean

>>>>> I have since put a link in the block terminals to bypass the switched
>>>>> live (as per diagram http://tinyurl.com/77to3 ) and it fires up and
>>>>> the pump runs!
>>>>
>>>>Do you mean the link from 9 to SL?
>>
>>Yes
>>
>>
>>>>Does this diagram extend further to the left, to show any internal
>>>>connections? If so, can you scan and post this bit?
>>
>>I've updated both pictures diagram is at http://tinyurl.com/77to3
>>
>>It does look a bit confusing re the colours as the br at the bottom looks 
>>as
>>if it is going into the second terminal up, however it is blue and the br
>>refers to the wire above (I think!). The photo http://tinyurl.com/9odss is
>>also rotated to match the drawing.
>>
>>I get 240v on SWL when the timer calls for it.  No wire coming into
>>externally.
>
> Right - that makes more sense . I didn't think it could be so wrong.
>
> If you connect live and swl to mains in - then it works
>
> The only difference with the diagram is that switched live comes via 
> either the link or the time switch contacts. ISTR that if you put the link 
> in it also works. Therefore, you must have a problem with the timer 
> contacts or the wiring to it
>
> Err ...
>
> that's it really
>

The only thing I don't understand is that the wire going into SL from the 
timer is 240v when the timer calls for it. Unless there should be another 
wire going into 9, but there isn't one there and the pump used to run!??!!!

Dean

In an earlier contribution to this discussion,
Dean Cox   wrote:


>>>
>> So where is the timer? And how does its output get to SWL? Maybe
>> something is hidden behind the perm mains supply cable - which
>> appears to be folded back in the photo?
>> --
>
> There is a wire that I guess comes from the timer and into the SL
> connection. It shows no voltage when the timer is off and 240v when
> it is on. In the diagram it seems to suggest that it needs a wire
> going in to the connector marked 9. However I do not apear to have
> such a cable ,but it does not look like there ever was one, and it
> worked previously! But thats the only thing I can think of. Given
> that putting a link between SL and 9 gets the pump going, but putting
> a live 240v into SL does not.
>

In my view, there's something highly suspect about this so-called live
signal coming from the timer. Have you actually measured 240v at SWL when
this wire is connected but when the 9-SWL link isn't connected? Or have you
just measured 240v on the timer output when the wire isn't connected? If the
latter, the timer contacts could be high resistance - and unable to deliver
enough current to drive the boiler and pump.
-- 
Cheers,
Set Square
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In an earlier contribution to this discussion,
Dean Cox   wrote:


>>>> I've attached a link to a picture of the 240v on SL
>>>> http://tinyurl.com/dg8hg the pump doesn't run.
>>>> If I disconnect the live wire going into SL and put in a wire from
>>>> SL to 9 the pump runs??
>>>>
>>>> Dean
>>>
>>> This is a total mystery! There is no difference electrically between
>>> having
>>> a link from 9 to SW or feeding mains in externally onto SW. Why one
>>> works and the other doesn't it totally beyond me!
>>
>> That's what I said
>
>
> That makes 3 of us then!!!!


Silly question - clutching at straws! In the setup shown in the photo, with
243v on SL, you *still* had the permanent live feed turned on, didn't you?
-- 
Cheers,
Set Square
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In message , Set Square  
writes

>In an earlier contribution to this discussion,
>Dean Cox   wrote:
>
>>
>> I've attached a link to a picture of the 240v on SL
>> http://tinyurl.com/dg8hg the pump doesn't run.
>> If I disconnect the live wire going into SL and put in a wire from SL
>> to 9 the pump runs??
>>
>> Dean
>
>This is a total mystery! There is no difference electrically between having
>a link from 9 to SW or feeding mains in externally onto SW. Why one works
>and the other doesn't it totally beyond me!


That's what I said

-- 
geoff

"raden"  wrote in message 
news:Uz+eQuHL3wKDFwGL@ntlworld.com...

> In message , Set Square  
> writes
>>In an earlier contribution to this discussion,
>>Dean Cox   wrote:
>>
>>>
>>> I've attached a link to a picture of the 240v on SL
>>> http://tinyurl.com/dg8hg the pump doesn't run.
>>> If I disconnect the live wire going into SL and put in a wire from SL
>>> to 9 the pump runs??
>>>
>>> Dean
>>
>>This is a total mystery! There is no difference electrically between 
>>having
>>a link from 9 to SW or feeding mains in externally onto SW. Why one works
>>and the other doesn't it totally beyond me!
>
> That's what I said



That makes 3 of us then!!!!