Hy G,
I'm just getting used to it , I two arrays spread from each other, one is the "early" array 330 W plugged into the blue sky, the other is a "later array" 200W going in to the TS 45. (early / later refer to part of the day when the arrays get sun, these are fixed).
Looking at my curves it makes sense now, after reviewing the absorption points, for the blue sky its 14.2 for the ts 45 I have it set at 14.6 (preset #5) . Temp has been low as well, so when the sun starts to hit the 2nd array the TS starts pushing the voltage up and the blue sky basically starts to shut down. All of this is expected, the temp compensation on the TS does really work as it will go to ~ 15V in 40-45F.
Its unusual for me as my Bz used to control the 2nd array , and had a lower set point than the Blue Sky .. so the blue Sky array would win out.
(For anyone else, the blue sky and the BZ have factory set absorption set points, the TS does not , but without reprogramming you have to choose one of the presets)
In any case the bank has been at 90% SOC before charging so the effect of getting into absorption is pretty quick (hour or so) . When I start using the bank more and the daily SOC falls, this will all be less of an issue
Other words, no real concerns.
Rover...