Simmersat connection confusion

[Tafia43]

Hi sparks,

I wish to replace a faulty simmerstat on a Tricity hob and have no clear idea of what goes where as the new S/S comes with poor instructions which do not compare with the connections on the switch and are not marked the same as the old one.

From looking on the net, I see various connection diagrams but they seem to differ one from the other.

Simmerstat is EGO 50 57076 070. Pins are marked P1, P2, 4, 2, S1, S2, Pilot

So far it looks as if:

P1 is the live in
P2 is the neutral in
2 is the load live
4 is the load neutral .

That leaves a pin marked pilot which I guess is the pilot live ( duh) but where is the pilot neutral?

Instructions also say " Connect P1 - 4 for integral pilot circuit." Unless I have misunderstood, that looks like a dead short.

Anyone know the correct connections, please?

Thanks,

T

 

[snowhead]

Pilot is the indicator lamp.

 

[telectrix]

check which pins switch to which with a meter. this may help:
I bought some of these simmerstats to refurb an industrial machine and faced the same issues - which terminals do what?
The parts came with a confusing wiring diagram, the terminal numbers didn't match.
The good news is that you can easily get inside this unit to see how it works without damaging it.
Release the metal front plate by gently lifting the tangs with a screwdriver then undrneath is a plastic shield which isn't glued in or anything, it just pulls out.
Here's what I found:
The bi-metal heater is connected between 2 and 4.
The bi-metal switch is between P1 and 2.
There is an auxiliary switch between 4 and P2 (P2 is the same metal strip as PILOT).
The auxiliary switch is closed when the control is 'not off'.
I also noted the short metal stub near 'TOP', in line with 2.
It is in fact the same metal strip as 2 so should be treated with respect i.e. it has mains voltage on it.
For my application, I wired:
Live in to P1
Neutral in to 4
Load powered from 2, returning to Neutral
Pilot Light from P1 to P2 (observe that the pilot wiring is a bit scary because it has a switched neutral).
Posted on Feb 05, 2011

 

[telectrix]

looks to me like Lin to P1, Nin to 4. Lout to P2, N-N.

 

[Tafia43]

Hi again sparks,

Many thanks for your suggestions.

Seems the above connection suggestions are different in that one has the load on P2 and the other has the load on 2.

Which is the hotplate neutral return pin? There is no pin marked neutral and only room for one wire on 4

Diagram sent with switch has the hotplate neutral return on pin 4A but there is no pin 4A.

Infernal things,.

Cheers