...especially in 2 draughty bed spaces.
What does your HVAC Tech say about room humidity, I wonder?

Meanwhile, the way I read the manual it seems to me that Activating and (or) Deactivating Humidity Compensation is retained for the next start-up - but this can be easily checked on site, can it not?
However, the MR-850 always starts up in "Invasive Mode" (that is, with a higher Chamber Set Point).
