Can’t we just have an ice sensor??The footnote on the table says that defrost losses are not included.
While it would be nice to include them (from a design point of view) the defrost losses vary wildly with the outdoor dew point, precipitation and wind. Maybe some minimum loss is included?
Also, my installer always set up the unit to defrost every 30 run minutes. This was cray-cray. I moved the jumper to defrost every 60 minutes, and cut the defrost losses in half, and reduced the wear on the reversing valve at the same time.