I have a Tonga hot tub from Leisure Spas. I want to program the heating cycles as it implies in the manual. Page 15 of manual says "Economy Mode operates the heater only during programmed Heating Cycles (See "Setting Heating Cycles" below)" Only problem is there is no section on "Setting Heating Cycles" so I have no idea how to program the heating times. I searched the internet high and low with no luck. Does anyone know how to do this or even how to contact this manufacturer? Any help would be greatly appreciated.