What happens when HomeKit adjusts temperature when TRV (or all rooms) OFF
For the summer, Tado is set to 'All rooms off', so we just have hot water being controlled. However, what then happens if I set/run a HomeKit Scene that adjusts the temperature of a room?
I would hope that if any TRV the Scene adjusts is actually OFF, nothing will happen, but somehow I don't trust Tado, nor Apple to have thought this through and I don't want to find that adjusting a TRV that's currently OFF, causes it to turn itself ON first.
Needless to say, that adjustment is not required in the summer months, but the Scene includes it for winter use. So what happens?