Thanks for this.
My dealer was going to do a 3 way call with me and Jacuzzi to change this setting. He really did try I beleive, as he called me first, put me on hold for a few minutes. He then said Jacuzzi wants him there to do it instead of 3 way call, etc. So, since in South Florida, and not too important, I figured no biggie, can wait till dealer is up my way, or if I see it really is of benefit or need. Now I have the info for future if I need it. Thanks.
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oh, and I may wait now that I've had the tub a few months and see that the electric bill went up a lot more than advertised, maybe we can save a few $ by NOT doing this change!