I gather that this feature turns on the tub heater ahead of the time you need it. But if you turn "Run Warming" on, does the water stay warm all the time until you turn it off? Like, day after day? This would seem to be a waste of power. And it might encourage microbial growth in the tub.
Or is it one shot, i.e. you manually turn on the feature a half hour before going to bed, and the next day you have to turn it on again?
If you don't use "Run Warming," it probably doesn't take very long for the water in the tub to heat up anyway. So what's the point?
On the other hand, if the machine is smart enough to start warming the tub twenty minutes or so before you typically start it up for the night, that would be pretty cool. (Er, warm.) Does "Run Warming" work this way? The water would cool off the next day, then be automatically pre-warmed again in the evening.
Any help from all you A10 gurus out there would be appreciated.