Heating thermostat does not update HeatPump correction parameter

[rhammen]

I noticed that when I change the temperature on the heating thermostat, the heatpumo correction factor is not updated.
One problem was that the correction was a factor 100 too large, because correction_factor is in % so needs to be divided by 100.
However, also after that fix the correction is not written.

When I add logging to coordinator.write() and coordinator.async_write() to see which (parameter,value) are written after I change the thermostat, nothing is logged at all. So it look like the write command triggered by
_ = self.coordinator.write(
key_correction_target.split(".")[1], correction
is not executed somehow.
(When I change the correction number in the UI directly, the value is written correctly and I can then see in the logging that at least the coordinator.async_write() function is called.)

[rhammen]

@BenPru and others: does this work for you?

[BenPru]

Shame on me... but I don't use the heating thermostat.
I'm currently working on two things:

1. Periodic statistic attributes #187 and later Create a CoP Sensor #188
2. Improve heating thermostat #189