I own an Alacante III spa made by reflections. I am getting a flo error code on my control panel. I have checked for an air lock at the pump and replaced the filter. There is not a pressure switch on the heater nor can I find a flow switch anywhere. Do you know of anything else I can try or know if or where there is a flow switch or what may be causing this code. I believe that Vita spas has taken over reflections spas