Dometic air conditioner and heat pump 2016 3051s, what model?
Found it - very helpful - thanks! There are times when the 1 degree differential would be better but others where 2 would be best to avoid excessive cycling of the system.
The heat pump running in high fan seems to be controlled by the auto setting - if differential is 5+ then it runs in high, if 4 or less it runs on low. This appears to be common across the heat and A/C options too. (Could run low vs auto but then it would run constantly whether heating or not.)
Interesting to learn that the heat pump has a coil defrost cycle every 25 minutes when the outside temp is 42 or less. During the time the heat goes outside and cold air is blown inside. Not ideal at all so not most useful in this range. Also it won't run (heat) at all below 30 degrees. Best to use the furnace (also the heat pump does not feed the ducted air lines so does not circulate well).
2016 Forester 2401R