As mentioned in Innogy Binding OH 3 - Thermostat set Temperature does not work 2 there are some issues with the thermostat. It is possible to receive the current setTemperature but it is no more possible to set the temperature the way we did with the old binding. Now you need to send a string to the targetTemperature channel of a thermostat.
I just want to let you know. I struggled some hours with this issue…
