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S12V not working on SEPs
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 Posted: Wednesday Oct 4th, 2017 07:14 pm
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timraynor
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Hi,

I've got an old Comfort I system. The main PCB has a chip labelled “Outside 4.169” A006166.  The slave SEP modules have a chip labelled First 4.164.  The SEP PCB is SM0223.

I've noticed that when arming or disarming the S12V connection on the SEP does not switch off, whereas it does on the main CPU.  I suspect this might have always been happening.  Both SEPs exhibit the same the problem, so I don't think it's a faulty PCB.

I found in the forum that there may be a jumper that needs removing (J7).  I removed that, pressed the SEP reset button and tried again, but no luck.  Have I got the right jumper?

I know it's a very old system but as it's functioning perfectly other than this, I'm reluctant to upgrade it.

Any ideas?

Kind regards,

Tim
 

Last edited on Wednesday Oct 4th, 2017 09:41 pm by timraynor



 Posted: Thursday Oct 5th, 2017 02:17 am
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slychiu
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In Comfort 1 the S12V output is not enabled.
You can program any of the other outputs to switch on and off. The SEM outputs can drive 500 ma combined so you can use them to switch a small load



 Posted: Thursday Oct 5th, 2017 07:35 am
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timraynor
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Many thanks for getting back to me.

I've got some spare cores between the main panel and the SEPs, so I was thinking of connecting S12V on the panel to a relay in each SEP (via the spare cores).  The relay would then switch the S12V connection on/off at the SEP.

Does that sound OK to you?



 Posted: Thursday Oct 5th, 2017 07:50 am
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slychiu
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I think it should work.



 Posted: Thursday Oct 5th, 2017 08:03 am
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timraynor
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I'll give that a go.  Many thanks for your help.



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