856. SUPPORT: No heat on Gecko Ye-5 System with K450 Topside Panel

No heat on Gecko Ye-5 System with K450 Topside Panel 1) Check for any error message on the display of the topside panel, and if a "Wrench" icon is displayed. 2) Check to see if the the Economy Mode is activated from the topside panel. 3) Check for correct voltage to the spa. 4) Check for good water flow from the heat pump. 5) Check voltage between the two heater cables. See Link to Operations Manual: http://www.spaguts.com/Documents/K450_TechBook_9919-100808.pdf