edit . for now
Solved the Schedule problem. I wasn’t using the root device.
Temp is still won;t go over 19.44, I have most of the day to try to work out why?
So you mean your temperature sensor is detecting a temperature that never goes above 19.44?
If the temperature showing in reactor is the same as your device itself, than its not a reactor problem.
The only thing I can imagine is that you have a faulty sensor or your heating is not raising temperature enough.