Oh dear, still no joy. There were comments from the residents. The sun went away and storm Jorge arrived so everyone felt cold. I had to intervene at 16:35 to bring it back to life.
Clearly I’m going to need to make it oscillate more aggressively.
I think I’ll have to try some virtual experiments before I do any more practical ones that upset people 
It might be a while before I get back to trying that I’m afraid.
Amusingly I did turn it on manually using the vendor application but the accumulator algorithm turned it back off again on the next cycle. It’s a good example of the need to allow multiple agents to control things for comfort.