My circ-pump runs 24/7 even when the temperature even when the heater is off. I've been told that the circ-pump on the '98 model should run all the time and that only the ones made after 2000 have a programmable circ-pump. A Sundance dealer told me this but I have heard that isn't true by another Sundance dealer. Does anyone know for sure? I'd like to be able to program it as I do with the regular pumps. They come on 4 times a day for specified durations.