[OpenTRV-dev] Vaillant boiler issue

[Damon Hart-Davis]

That’s definitely on the right lines, thanks!

Though I’d prefer not to have to assemble anything (time is pretty tight) or have another power supply, though again that can probably be worked around.

Thanks again!

Rgds

Damon

On 29 Jan 2014, at 17:34, Stuart Poulton <EMAIL ADDRESS HIDDEN> wrote:

> How about this from a nice UK based company
> 
> http://shop.ciseco.co.uk/kit-relay-board-simple-to-use-12v-operation-supports-logic-level-also-10amp/
> 
> Stuart
> 
> On 29 Jan 2014, at 17:15, Damon Hart-Davis wrote:
> 
>> Hi,
>> 
>> Had a chat with Vaillent tech support this afternoon and the newer models of the ecoTEC plus 837 are different to the old in that the new one is not presenting a real load 240V, ie is fairly high impedance purely for sensing, and thus will probably NOT work property with an SSR (or indeed anything self-powered for a start).
>> 
>> So, I have to find an alternative solution that should work for the problematic install.  It might even have to be a little logic relay board.
>> 
>> Small neat efficent 240VAC/DC 3V-in relay modules (mains powered) that I can sling in one of our SSR boxes (for example) would be welcome, and can then be used as an alternative in any similar situation.  We should see what OEM is using.
>> 
>> Rgds
>> 
>> Damon
>> 
>> 
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