Funny, after posting this I've noticed SOMETHING running non-stop since last night and this morning, and my ozonator indicator is on (I can also hear a humming in the cabinet and see bubbles coming out of a port on the bottom of the tub). Heater icon was not on when I observed this. This is how I believe the tub should be operating ALL the time (except for when I'm running the jet pumps of course), but over the last couple days there have been several times when I've walked out and the tub is dead silent with no bubbles coming out, no ozonator icon, and no humming from the cabinet. It's always at the right temp so I know thing's are working, but with a 24/7 circ pump why would the tub go dead from time to time? Oh, the tub is definitely in "Standard" mode.
Next time I notice it dead I'm going to try turning on the waterfall, which runs off the circ pump. I guess that will tell me if the pump is working even when the tub goes "dead".
Where are the Sundance experts???