Hot tub came with the house. It’s a Sundance Spa 880 Maxxus, circa ~2008-2009. It says all I have to do is push the ‘mode’ button to switch from economy to standard, but that does nothing. It’s struggling to keep the temps up with it being about 20*F outside. I managed to get it switched a few days ago just playing around on the control board, but I don’t remember how and it reverted back to economy mode on its own.