[OpenTRV-dev] Vaillant boiler issue

[Damon Hart-Davis]

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