Good evening forum collective… I’ve spent the day assisting my builder commission his Samsung gen6 with a pre-plumbed worldheat cylinder and we’ve got a few issues.
We’ve decided to use the Samsung controller as the room thermostat, so we’ve configured the field settings values per the midsummer quick start guide to enable that. I’ve setup the weather comp/water law and I’ve set the DHW schedule and temperature. It does a DHW charge just fine, but I cannot get it to switch over to heating.
The issue is that the worldheat cylinder includes a integrated buffer, along with associated secondary pump and 2 port zone valve. I cannot for the life of me get the Samsung to switch the zone valve (and the pump, wired across the zone valve aux contacts) on when calling for central heating. I can get it to run the zone valve when I go into self-test and manually drive it, but here’s the weird thing; when I activate it to on, the contacts on the aux switch close between white and orange, implying that the valve is powering off when I activate it. White being the NC contact to orange. I did not have my tester or multimeter with me today to verify whats actually occuring.
I should add that it did run the zone valve and pump when it was asked to do a DHW charge.
So, the issue can be resolved in 2 ways: remove the zone valve and secondary pump, re-plumb the buffer as a volumiser and just leave the primary pump and 3 port to do what’s required (my preference, for simplicity and efficiency), or try and get the Samsung controller to actively drive the zone valve when required.
Does anyone have any experience with using a samsung MIM to drive a zone valve or are you all running direct?
I’ve got a lot more experience with Cool Energy/SPRSUN on the Carel platform, so this Samsung is ‘a bit weird’ 
